18．Lighthouses are remainders from the past that ships and sailors once sought in order to navigate dangerous U．S．coastal waters．But today，those remaining ones have fallen mostly into disuse，except as tourist attractions and old reminders of a romantic period．The U．S．Coast Guard and the U．S．Lighthouse Society say there are about 600lighthouses remaining in the U．S．，and some of those are at risk，having suffered from years of neglect （忽略）．
Dave Eshbaugh of the Oregon State Parks Trust，believes in preserving them．"They are worth saving．I think it would be disrespectful to our history and people to let them fall down and go away．"
Preservation societies in several states are attempting to keep lighthouses from disappearing． And the U．S．Congress is trying to help．In 2000，lawmakers passed the Lighthouse Preservation Act that lets the Coast Guard transfer ownership of lighthouses，at no cost，to public and private organizations．Local，state and federal agencies also can benefit from the act．
Some private citizens also are helping to restore abandoned lighthouses．Steve and Michelle Bursey own the Heceta Head Lighthouse．It is not just their home，but also their livelihood．
Not far from the lighthouse is the lighthouse keeper's house．The Burseys have changed it into a bed and breakfast inn．They say the income from their business pays for the necessary repairs that keep the lighthouse in condition．Michelle says it is a labor of love．"We have to constantly put hours and hours of time and labor into making it shine．"
Aside from making Heceta Head their home and business，the Burseys have a great appreciation for the history and the importance associated with their lighthouse．
"It's important to keep them up，"says Steve．"Once they're gone，you can never bring them back．"They are vivid reminders of a previous times and a way of life that people like Steve and Michelle Bursey think are worth preserving．They are part of America's history，its legend，and its
sailing past．

59．The best title for this passage should beB．
A．Lighthouses Are the Reminders of the Past
B．Lighthouses Seek Better Future
C．Lighthouses Benefit People Today
D．Lighthouses Have Come Back
60．According to the Lighthouse Preservation Act，the Coast Guard canA．
A．give possession of lighthouses to some organizations for free
B．a(chǎn)sk the Congress for help to keep lighthouses from danger
C．a(chǎn)llow the preservation societies to protect lighthouses
D．help local，state and federal agencies to profit from lighthouses
61．Steve and Michelle Bursey in Heceta Oregon are mentioned here to show thatC．
A．old lighthouses can be restored and reused as a hotel
B．lighthouses are very important to the life of some private citizens
C．some individuals are helping to protect abandoned lighthouses
D．common people can solve the problem with lighthouses
62．The pattern of organization of this passage isD．
A．cause and effect                     B．question and answer
C．a(chǎn)rgument and proof                   D．problem and solution．

分析 本文為科教類說明文，文中介紹了燈塔的現(xiàn)狀與保護．美國現(xiàn)在僅有近600座燈塔，而且很多都很破��；作為歷史和一種生活方式的見證的燈塔正在漸漸消失；所以政府發(fā)布保護條例，要求海岸警衛(wèi)隊免費轉(zhuǎn)增燈塔；各種組織和個人也積極加入到修復(fù)和保護燈塔的行列；

解答 59．答案是B．考查主旨大意；由于年久失修，美國現(xiàn)有的近600座燈塔有些岌岌可危．為了保存這一歷史古跡，政府和普通公民展開了保護燈塔的活動，使燈塔煥發(fā)了新春，故選B．
60．答案是A．考查細(xì)節(jié)理解．由第三段中"In 2000，lawmakers passed the Lighthouse Preservation Act that lets the Coast Guard transfer ownership of lighthouses，at no cost，to public and private organizations．"可知，燈塔保護條例讓海岸警衛(wèi)隊免費將這些燈塔轉(zhuǎn)給公共或者私人機構(gòu)加以保護，故A項正確．
61．答案是C．考查推理判斷．第四段第一句"Some private citizens also are helping to restore abandoned lighthouses．"是該段的主題句，由該句可知，有些普通公民也在幫助恢復(fù)被遺棄的燈塔，下文則以這兩個人為例進行了具體說明，故選C項．
62．答案是D．考查篇章結(jié)構(gòu)．本文開頭提出問題：作為歷史見證的燈塔曾經(jīng)起到很重要的導(dǎo)航作用，但如今它們幾乎被廢棄；下文說美國一些保護組織開始著手保護這些燈塔，然后提到各方的努力．因此本文的結(jié)構(gòu)是：提出問題-解決問題，故選D．

點評 閱讀要在整體理解文章的基礎(chǔ)上，根據(jù)題干選項定位細(xì)節(jié)，然后對照選項做出合理的判斷．如果是主旨大意的判斷要把握文章整體，避免以偏概全．

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：閱讀理解

8．For eighty four days old Santiago had not caught a single fish．At first a young boy，Manolin，had shared his bad fortune，but after the fortieth luckless day the boy's father told his son to go in another boat．From that time on，Santiago worked alone．The boy loved the old fisherman and  always helped him with money and food．Usually，they would talk about the fish they had taken in luckier times or about American baseball after supper，while at night，alone in his cottage，Santiago dreamed of lions on the beaches of Africa，where he had gone on a sailing ship years before．He no longer dreamed of his dead wife．
    On the eighty-fifth day，Santiago set off to fish before dawn．Two of his baits （餌） were fresh tunas （金槍魚） the boy had given him．Then he set his lines which went straight down into deep dark water．
     As the sun rose he saw other boats in toward shore．A man of war bird showed him where dolphin were chasing some flying fish．This time Santiago saw tuna jumping in the sunlight．A small one took the hook on his line．Pulling the fish aboard，the old man thought it a good fortune．
    Toward noon a marlin，a common fish in the s ea，started eating the bait which was one hundred meters down．Gently the old man played the fish，a big one，as he knew from the weight on the line．At last he struck to settle the hook．The fish did not come out of the surface．Instead，it began to pull the boat to the northwest．The old man followed it． Although he was alone and no longer strong，he had his skill and knew many tricks． He waited patiently for the fish to be tired．
     It became cold after the sunset．Suddenly the marlin leaned，pulling Santiago forward on his face and cutting his cheek．By dawn his left hand was cramped （抽筋的）．The fish had headed northward； there was no land in sight．Hungry，he cut pieces from the tuna and chewed them slowly．That morning the fish jumped．Seeing it leap，Santiago knew he had hooked the biggest marlin he had ever seen．Then the fish went down and turned toward the east．Santiago drank a little water from the bottle during the hot afternoon．Close to nightfall a dolphin took the small hook he had baited．He lifted it aboard，careful．After he had rested，he cut meat from the dolphin and kept also the two flying fish he found in its stomach．That night he slept．He awoke to feel the line running through his fingers as the fish jumped．Making the line loose slowly，he tried to tire the marlin．After the fish slowed its run，he washed his cut hands in sea water and ate one of the flying fish．At sunrise the marlin began to circle．Faint and dizzy，he worked to bring the big fish nearer with each turn．Almost exhausted，he finally drew his big fish alongside and drove in the harpoon （魚叉）．The fish was two feet longer than the boat．No fish like it had ever been seen in Havana harbor．An hour later，he sighted the first shark，a fierce Mako，and it came in fast to chase after the dead marlin．The old man struck the shark with his harpoon．The Mako rolled and sank，carryin g the harpoon with it and leaving the marlin bloody．He knew the smell would spread．Watching，he saw two sharks closing in．He struck at one with his knife and watched it sliding down into deep water．He killed the other while it tore at the flesh of the marlin．When the third appeared，he thrust （刺） it with the knife．The other sharks came at sunset．At first he tried to beat them with the tiller （舵柄） from the boat，but his hands were bleeding and there were too many in the sea．In the darkness，as he steered （掌舵）toward the harbor of Havana，he heard them hitting the boat again and again．But the old man thought only of his steering and his great tiredness．He had gone out too far and the sharks had beaten him．He knew they would leave him nothing but the stripped skeleton of the big marlin．
     All lights were out when he sailed into the little harbor and beached his boat．He could just make out the white backbone and the upstanding tail of the fish．Once he fell under their weight and lay patiently until he could gather his strength to go on．In his cottage he fell on his bed and went to sleep．
65．The above story is most likely to be adapted fromB．
A．The Adventures Of Tom Sawyer                     
B．The Old Man And The Sea        
C．The Son Of The Sea                                     
D．Treasure Island  
66．According to the text，which statement is NOT true about Manolin？C
A．The boy left Santiago at last．
B．The boy had mercy on Santiago．
C．The boy was Santiago's adopted son．
D．The boy showed his great concerns to Santiago．
67．Why did the man feel that he could be lucky this time？B
A．Because a lot of sharks followed his boat．
B．Because a small tuna took the hook on his line．
C．Because he dreamed about the American lions．
D．Because he saw many flying fish were chased by the dolphins．
68．Why does Santiago let the marlin lead his boat instead of pulling the big fish up？C
A．He was too tired and hungry to pull the big fish up．
B．He wanted to use the marlin as a bait to catch the sharks．
C．His experience told him not to do so before the fish was tired out．
D．He wanted to kill the marlin first before he pulled it up to the boat．
69．Which sentence below can be used to best describe Santiago's character？D
A．"He no longer dreamed of his dead wife．"（ in Para.1）
B．"Although he was alone and no longer strong，he had his skill and knew many tricks．"（ in Para.4）
C．"Almost exhausted，he finally drew his big fish alongside and drove in the harpoon．"（ in Para.5）
D．"Once he fell under their weight and lay patiently until he could gather his strength to go     on．"（ in Para.6）
70．According to the text，what will be talked about next？A
A．People's reflection when they saw the giant marlin's skeleton outside．
B．A funeral held by the boy and the local people after his death．
C．Santiago's action to realize his dream about the lions．
D．Santiago's struggle against sharks．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

9．The London Pass is a sightseeing city card which gives you entry to a choice of over 60popular tourist attractions in the city．It makes sightseeing easy and affordable by giving you access to top sights in the city with one card．
With the London Pass you don't have to queue to buy tickets，or stand in line to get into the attraction．The London Pass acts as your ticket into every one of the 60attractions included．It saves the trouble of carrying around cash for tickets and allows you to budget your spending as you've already made the one-off payment．As well as this，you can feel like a VIP with the London Pass as you are granted Fast Track Entry into a handful of London's most popular attractions．
The London Pass is available for 1，2，3or 6days-so choose the duration of Pass that best matches your trip．Your London Pass is valid for use on continuous days for the duration you have selected and is activated upon entry at your first attraction，through a bar code recognition system．
London is packed with top restaurants featuring world-class chefs serving a variety of cooking delights．However，dining out can be expensive．With the London Pass you can make great savings at over 145restaurants，with discounts of up to 50%off or special offers such as a free bottle of wine or ice cream sundae．
So if you are planning a trip to London，do yourself a favour and check out the London Pass．You may have a more enjoyable trip．

21．With the London Pass，you canD．
A．stay in hotels free of charge
B．buy entrance ticket in advance
C．travel to each sightseeing in London
D．enter the attractions through Fast Track Entry
22．What can we learn about the London Pass？B
A．You can use it at any time you want．
B．It can save time，money and stress．
C．It must be activated as quickly as you Can．
D．You can enjoy the discounts at any restaurant．
23．The main purpose of the text is toA．
A．a(chǎn)dvise visitors to buy the London Pass
B．tell visitors how to book the London Pass
C．supply visitors with some restaurant information
D．introduce the most popular attractions in London．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

6．The high-protein，low-carbohydrate（碳水化合物） diets many people turn to for weight loss might have potentially harmful long-term effects on the  colon，a small study indicates．
In the study，UK researchers found that a protein-heavy，low-carb diet created certain changes in the colon that could contribute to colon cancer risk．The study itself does not show whether high-protein diets really raise the risk of any colon diseases，but the findings raise that possibility．
Diets relatively high in protein and lower in carbs have been shown to help heavy people lose weight．"People should not be discouraged from losing weight，"Dr Flint said．However，he added，they should make sure that any weight loss plan includes adequate amounts of fiber and a high protein intake over months to years might have ill effects on the colon．
The findings are based on 17overweight men who followed three short-term diets：a one-week menu plan to keep their weight； a four-week high-protein diet with reasonable amounts of carbohydrates； and a four-week high-protein diet low in carbs．
On average，the study found when the men were on the high-protein diets，they had higher levels of substances known as N-nitroso compounds（亞硝基化合物） and other metabolites（代謝物） that have been linked to cancer．And when they were on the high-protein，low-carb diet，they had lowered amounts of fiber-originated compounds thought to be protective against cancer．
Exactly what those changes might mean for a person's health is not clear，But Flint said that the findings suggest that people should be cautious about consuming too much protein and too little fiber over a long period．In general，experts recommend that adults get about 28grams of fiber per day-though it's not known whether that's enough for someone on a high-protein weight-loss diet．

71．What is the best title of the text？B
A．Plan a Healthy Diet
B．Take Care of Your Colon
C．How to Lose Weight
D．How to Protect against Cancer
72．The underlined word"colon"in Paragraph 1probably refers to"A"．
A．a(chǎn)n organ     B．intelligence   C．a(chǎn) habit    D．behaviour
73．The study shows that high-protein，low-carb diets mayC．
A．a(chǎn)ffect your mood     B．lower cancer risks
C．harm your body       D．keep your figure
74．It can be inferred from the text thatD．
A．we shouldn't take the study seriously
B．weight problems are hard to solve
C．it is better to follow a low-carb diet
D．people should be cautious to lose weight
75．The author is intended toB．
A．a(chǎn)dvise how to lose weight
B．introduce a scientific finding
C．describe a research process
D．talk about healthy diets．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

13．Temperature is measured by means of a thermometer （溫度計）．One general form of thermometer depends upon the fact that most solids and liquids expand as their temperature rises．There are one or two exceptions．There is，for instance，a kind of steel called invar （from"invariable"） which does not change its dimensions as temperature changes； it is valuable for making pendulums （鐘擺），since，if the length of a pendulum changes，its time of vibration changes．It is also used for making very accurate measuring scales．In both cases，then，changes of atmospheric temperature have no effect if invar is used．
Another exception is that very odd liquid，water，which has many strange properties （特性）．As water gets colder it contracts （收縮），which is ordinary behavior，until it reaches the temperature of 30℃．a(chǎn)bove freezing point．After that，as it gets colder，it expands．This is fortunate---for considering the freezing of a pond．As the water on top gets colder，it shrinks； and so，volume for volume，it becomes heavier and sinks．This goes on until all the pond is at 30℃，but after that，as the water becomes colder it expands．Therefore the colder water stays on top and freezes，covering the pond with ice．If the water went on contracting down to the freezing point，the pond would become a solid block of ice in the end．This would not worry people who live in hot climates，but it would be very serious for those who live in cold climates，especially for those who want to break the ice and catch fish which live in the cold water beneath．

56．Invar is valuable for making pendulums becauseA．
A．it can hardly change its shape or size as temperature changes．
B．it will change its dimensions without the change of temperature．
C．its time of vibration doesn't change if its length changes．
D．its time of vibration does not change if its length changes．
57．As water gets colder after reaching the temperature of 30℃．it willc．
A．contract       B．shrink      C．expand     D．freeze
58．Which of the following statements is true，according to this passage？D
A．Only invar can be used to make a thermometer．
B．Only water can be used to make a thermometer．
C．Both invar and water can be used to make a thermometer．
D．Neither invar nor water can be used to make a thermometer．
59．The best title of this passage is most likely to beB．
A．Temperature Measurement     
B．Two Exceptions
C．Uses of Invar    
D．Properties of Water．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

3．One evening I went out and left my 17-year-old son in charge of his 8-year-old brother and 4-year-old sister．On this occasion，the work was made less troublesome by the presence of his girl friend．I left with complete confidence that the older children would do a wonderful job of babysitting the younger children．Later，I discovered that complete confidence was the last thing I should have left home with．
I had decided to return home earlier than planned so that my son and his girlfriend could go out．I called home with this happy news．But instead of hearing his cheerful，grateful voice on the other end of the line，all I heard was the sound of a telephone ringing．
It was，I should point out，after 10 p．m．，when the two younger children should have been in bed．a(chǎn)nd when the two older children should have been answering the phone．"I'll give him a lesson，"I said．I decided they must be outside．Why they might be outside at 10：30 on a winter night I had no idea，but it was the only explanation I could come up with．
Finally，in desperation，I called his girlfriend's house．After what seemed like countless rings，his girlfriend answered．"Yes，"she said brightly，"He's right here．"
He came on the phone．I was not my usual calm，rational（理智的）self．After all，one of the rules of survival for modern parents is that you can't trust modern teenagers．"Where are the children？"I said．He said they were with him．They had done nothing wrong．My son had taken the younger children over to his girlfriend's house just for ice cream and cake．This was too good to be believed．Well，it turns out that I shouldn't have believed it．It was only part of the truth．
The following Saturday evening we were at my parents home，celebrating my birthday．My oldest son gave me the children's gifts．Mounted and framed were a series of lovely color photographs of my children，dressed in their best clothes，and wearing their most wonderful expressions．They are pictures to treasure a lifetime，all taken by the father of my son's girlfriend．

36． The author went out and left her eldest son in charge of the younger children becauseC．   
A．she knew that her eldest son was a good baby-sitter
B．she thought it no hard work to take care of the younger ones
C．she believed he could do well with his girlfriend's help
D．she could not find a baby-sitter on that winter night
37．When the author called home that evening，she found thatD．
A．two younger children had already been in bed
B．the children were preparing a birthday gift for her
C．her son was quarrelling with his girlfriend
D．there was no one answering the telephone
38．What can you learn from the underlined sentence in the fifth paragraph？A
A．The author didn't believe what her son had told her．
B．The author had complete confidence in her son．
C．The author believed her son was telling the truth．
D．The author was moved by what her children had done．
39．What might the children do that evening？C
A．They had a birthday party．
B．They framed some photographs．
C．They had their pictures taken．
D．They made some beautiful clothes．
40．What does the author intend to tell us by the story？D
A．Modem teenagers are not worth trusting．
B．It is no easy job to look after young children．
C．It's no good to have a girlfriend at an early age．
D．Her children have a caring and tender heart．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

10．Some plants get so hungry they eat flies，and even small frogs．What's more amazing is that these plants occur naturally （in special environments） in every state．In fact，they're found on every continent except Antarctica．
You've probably seen a Venus'flytrap--a small plant，which grows 6 to 8 inches tall in a container．At the end of its stalks （莖） are leaves that act like traps （陷阱）．Inside each trap is a lining of tiny hairs．When an insect lands on them，the traps suddenly shut．Over the course of a week or so，the plant feeds on its catch．
The Venus'flytrap is just one of more than 500 species of meat-eating plants，says Barry Meyers-Rice，the editor of the International Carnivorous Plant Society's Newsletter．He states although you might have read some science-fiction stories，no meat-eating plant does any danger to humans．
Barry says a plant is meat-eating，only if it does all four of the following："attract，kill，digest，and absorb"some form of insects．Meat-eating plants look and act like other green plants--well，most of the time．
All green plants make sugar to produce food．What makes meat-eating plants different is their special leaves，which need insects for one reason：nitrogen （氮）．Nitrogen is a nutrient that they can't obtain any other way．Why？
Almost all green plants on our planet get nitrogen from the soil．Meat-eating plants can't．They live in places where nutrients are hard to get from the soil because of its acidity．So they've come to rely on getting nitrogen from insects and small animals．In fact，nutrient-rich soft is poisonous to meat-eating plants．Never fertilize （施肥） them!But don't worry，either，if they never seem to catch any insects．They can survive，but they'll grow very slowly．
64．According to the passage，a Venus'flytrapC．
A．is a small plant which grows in a container
B．is a kind of plant which gets hungry easily
C．can trap and feed on some form of insects
D．can only grow 6-8 inches tall
65．From the passage，we can infer thatC．
A．meat-eating plants are found nowhere else except Antarctica
B．a(chǎn)ll green plants get nitrogen from the soil
C．meat-eating plants endanger humans in science-fiction stories
D．the nutrient-poor soil is beneficial to meat-eating plants
66．Meat-eating plants grow very slowly，B．
A．so you'd better fertilize them
B．probably because the supply of nitrogen is cut off
C．simply because they can't absorb nitrogen from the soil
D．a(chǎn)nd then they will die slowly
67．Which of the following is true？C
A．Meat-eating plants look and act like other green plants．
B．It's hard to get nutrients in the soil when acidity is high．
C．The Venus'flytrap eats flies to get nutrient from them．
D．Green plants make sugar at night．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

7．Two Earthquakes in Two Months：
Comparing the Quakes in Haiti （海地） and Chile （智利）
Overview （概要） How do the earthquakes in Chile and Haiti compare？Here，students perform a gallery walk to learn more about the earthquakes from a specific point，and then do a specific research and presentation project or response activity．Finally，they seek answers to their unanswered questions．
Materials Print copies of photographs，charts，documents and other visuals to display，as described below； computer （s） with Internet access （optional），research materials，handouts．
Warm-up Choose and prepare a"gallery"of photographs，graphics，news reports and other materials to display around the room to enable students to consider the 2010earthquake in Chile．
Depending on course program，choose materials for the gallery that provide a window on the two quakes，through one of the following specific points，or the focus of your choice：
Earthquakes through History Putting the 2010Chilean and Haitian quakes into historical view related to other earthquakes，including the 1960Chilean quake and the 2004Asian earthquake and tsunami．
Rescue and Aid Considering domestic and international response to the disasters by militaries，governments and aid organizations，including rescue and recovery as well as efforts to provide food，water，health care and shelter to those affected．
Related The article Underwater Plate Cuts 400Mile Gash compares several earthquakes：
Mr．Lin figured that the quake on Saturday was 250to 350times more powerful than the Haitian quake．
But Paul Caruso noted that at least on land，the effects of the Chilean tremor （震動） might not be as bad．For one thing，he said，the quality of building construction is generally better in Chile than in Haiti．And the fact that the quake occurred offshore should also help limit the destruction．In Haiti，the rupture （斷裂） occurred only a few miles from the capital，Port-au-Prince．The rupture on Saturday was centered about 60miles from the nearest town，Chillan，and 70miles from the country's second-largest city，Concepción．
Read the article using the following questions．
Questions For discussion with others and reading comprehension：
How does the 2010Chilean earthquake compare to the 1960Chilean earthquake？
Why do scientists believe that the 2010Chilean earthquake will not cause the same level of damage as January's Haitian earthquake did？
How does the 2010Chilean earthquake compare to the 2004Indonesian earthquake？
What reasons do scientists give to explain why the Indonesian quake caused so much more damage than the recent Chilean earthquake？

64．Which of the following shows one of the reasons for slighter losses in Chile than in Haiti？A

65．We can infer that the article Underwater Plate Cuts 400Mile Gash includesD．
A．the causes of the 2010Chilean earthquake and the 1960Chilean earthquake
B．the comparison between the 2010Haitian and the 2004Indonesian earthquakes
C．the reason for the 2010Chilean quake being more powerful than January's Haitian earthquake
D．the reason for less damage in the 2010Chilean quake than in the 2004Indonesian earthquake
66．What is the passage most likely to be？B
A．A program for research．
B．A guide to earthquake study．
C．An advertisement for students．
D．An introduction to quakes．

查看答案和解析>>

科目：高中英語 來源： 題型：完形填空

8．Wolves live in packs．Most packs have four to nine members，（41）B the size can range from as few as two wolves to as many as 15．（42）C，a pack can increase to 30members until some individuals（43）Dto find new territory（領(lǐng)地） and form their own pack．
（44）A the pack hierarchy（等級制度），there are male（雄性） and female hierarchies．The alpha（領(lǐng)頭的） male （45）D the entire pack，both males and females．The alpha female and male are the（46）Bones that breed．
Wolf packs usually hunt within a territory．Territories can（47）C from 50square miles to over a 1，000．Wolves travel as far as they （48）Bto in order to find prey（獵物）．They often travel at five miles per hour but can reach a（49）Aof 40miles per hour．
When the young adults reach the age of three，they can either join the pack or（50）Cto find their own territory．The new territory can be （51）Bby if there is a lot of prey．In some areas young adults travel hundreds of miles to （52）Ca new territory．
Wolves typically mate for life．In the northern United States，they （53）A from late January through March．The breeding season is earlier for wolves living （54）B south．Wolves are pregnant （懷孕） for about 63days and usually（55）Cfour to six pups．
The wolf pups are usually born in a den（獸穴）．At birth，they cannot see or（56）A and weigh about one pound．The pups are weaned （斷奶） at about six weeks．Adult pack members （57）D meat and bring it back to the den for their pups．（58）A the adults regurgitate（反芻） the food，the pups have a hearty meal．The mother wolf（59）Bher pups to new den sites every couple of months until the fall when the pack stops（60）C at den sites
41．A．howeverB．butC．in caseD．unless
42．A．EspeciallyB．UsuallyC．OccasionallyD．Specia lly 
43．A．break offB．leave offC．take offD．move off
44．A．WithinB．InC．WithoutD．Around 
45．A．holdsB．livesC．graspsD．controls
46．A．mostB．onlyC．rightD．very
47．A．spendB．takeC．rangeD．bring
48．A．wishB．needC．reachD．go
49．A．speedB．a(chǎn)reaC．distanceD．height
50．A．dineB．sleepC．leaveD．study
51．A．farB．closeC．badD．good
52．A．huntB．searchC．findD．build
53．A．breedB．feedC．raiseD．care
54．A．laterB．fartherC．deeperD．longer
55．A．giveB．takeC．bearD．bring
56．A．hearB．speakC．walkD．run
57．A．eatB．robC．spitD．swallow
58．A．AfterB．BeforeC．UntilD．While
59．A．bringsB．movesC．followsD．leaves
60．A．sleepingB．huntingC．livingD．eating．

查看答案和解析>>

同步練習(xí)冊答案