Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange animals coming out of the oceans, but in fact no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessity, since they, the plants, are the only form of life that is able to get and store energy.
　　The first plants to exist out of the water were probably certain kinds of algae（海藻）which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution（進化）took place quickly. By the end of 100 million years, plants had developed their roots（根）,and some had got tree -like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.
　小題1:The main idea of the first paragraph is ________.
A．life on land probably began 430 years ago
B．the first animal on land came from oceans
C．there wouldn't be animals without plants
D．plants are the only form of life that is able to get and store energy
　小題2:Which of the following statements is true according to the passage?
A．Algae has existed for more than 430 million years.
B．It is impossible that algae might be the earliest plant on land.
C．Plants get food from animals in the oceans.
D．Evolution began after animals appeared on land.
　小題3:Plants with roots appeared about ________ million years ago.
A．430B．300C．330D．100
　小題4:According to the passage, ________ appeared earlier than ________.
A．a(chǎn)pples; orangesB．oranges; apples
C．oranges; rosesD．a(chǎn)lgae; wheat

小題1:C
小題2:A
小題3:C
小題4:D

小題1:第一段有這句話：no animals could have been living if plants hadn’t been on land first.
小題2:第一段說陸地上的生命出現(xiàn)于430 million years ago，第二段說海藻是最早的植物。
小題3:最早出現(xiàn)的植物在四億三千萬年前，一億年后植物開始生根，即三億三千萬年前。
小題4:從第二段最后可知，長根的植物比結(jié)子的植物要早,因此選D。
練習冊系列答案
相關(guān)習題

科目：高中英語 來源：不詳 題型：完形填空

簡答題(共3小題；每小題2分，滿分6分)
閱讀下面短文，根據(jù)第73至第75小題的具體要求，簡要回答問題。
The north magnetic pole(磁極)is no longer a resident of Canada.It has drifted across the Canadian Arctic and is now angling toward Siberia.
Not to be confused with the geographic North Pole—the northern extremity of the Earth’s axis(地軸),the north magnetic pole(where the Earth’s magnetic field is directed downward)is moving due to natural changes in the Earth’s magnetic field,a process that originates about 3000 kilometers below our feet,in the outer core(核心)of the planet.But scientists are now noticing that the magnetic pole has picked up its pace.

Over the past century,the pole has been migrating at an average speed of about 10 kilometers per year,says Larry Newitt,head of Geomagnetic Laboratory at Natural Resources Canada in Ottawa.Since the 1970s,this speed has increased to about 50 kilometers per year.
Scientists are wondering why the speed is increasing,says Newitt.One hypothesis(假說)relates it to “magnetic jerks”,sudden shifts(變化)in the rate of change of the magnetic field.There have been three jerks in the past four decades,each one correlating to an increases in speed.
If the north magnetic pole continues at its current rate,it could reach Siberia by 2056.
“For most of recorded history,the pole has been a part of Canada,and now it’s not,”says Newitt.“It may be a blow to our collective psyche,but other than that,it doesn’t have a major effect on most people’s existence.”
73.Find in the passage a word closest in meaning to the underlined word “angling”.
____________________________________________________________
74.What could happen to the north magnetic pole by the middle of the 21st century?(回答詞數(shù)不超過8個)
____________________________________________________________
75.What is the main idea of the passage?(回答詞數(shù)不超過8個)
____________________________________________________________

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

A newly trained teacher named Mary went to teach at a Navajo Indian reservation. Every day, she would ask five of the young Navajo students to __1__ the chalkboard and complete a simple math problem from   2  homework.
They would stand there, silently,  3  to complete the task. Mary couldn’t figure it out.   4  she had studied in her educational curriculum helped, and she   5  hadn’t seen anything like it in her student-teaching days back in Phoenix.
What am I doing wrong? Could I have chosen five students who can’t do the  6 ? Mary would wonder. No,  7  couldn’t be that. Finally she   8  the students what was wrong. And in their answers, she learned a   9  lesson from her young   10  pupils about self-image and a(n)   11  of self-worth.
It seemed that the students  12  each other’s individuality and knew that  13  of them were capable of doing the problems.   14  at their early age, they understood the senselessness of the win-lose approach in the classroom. They believed no one would  15  if any students were shown up or embarrassed at the  16 . So they   17  to compete with each other in public.
Once she understood, Mary changed the system   18  she could check each child’s math problem individually, but not at any child’s expense  19 his classmates. They all wanted to learn,  20  not at someone else’s expense.
1.  A. go to                     B. come to               C. get close to             D. bring
2.  A. his                        B. their                   C. his own                  D. her
3.  A. happy                    B. willingly             C. readily                   D. unwilling
4.  A. Anything               B. Nothing              C. Everything             D. Neither
5.  A. almost                   B. certainly              C. hardly                   D. never
6.  A. question                 B. chalkboard          C. problem                 D. homework
7.  A. they                      B. it                        C. everything              D. each
8.  A. asked                     B. questioned           C. told                       D. understood
9.  A. outstanding            B. surprising            C. annoying                D. frightening
10. A. sunburned               B. tender                 C. Indian                    D. naughty
11. A. sense                      B. image                 C. way                       D. aspect
12. A. had                        B. ignored               C. respected                D. cared
13. A. none                      B. no one                C. each                       D. not all
14. A. Especially               B. Even though        C. Even so                  D. Even
15. A. lose                        B. win                     C. achieve                  D. answer
16. A. time                       B. situation              C. chalkboard             D. condition
17. A. refused                   B. rejected               C. tried                      D. promised
18. A. if                        B. so that                 C. unless                    D. in case
19. A. in favour of           B. of                       C. by means of            D. in front of
20. A. and                        B. but                     C. so                          D. or

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Animal Conservation
Many animal and plant species have become extinct（滅絕的）and many more are in critical danger. Finding ways to protect the earth's wildlife and conserve（保護）the natural world they inhabit（居�。﹊s now more important than ever.
Dodo
The Dodo is a classic example of how human caused damage to the earth's biology. The flightless Dodo was native to the Island of Mauritius in the Indian Ocean. It lived off fruit fallen from the island's trees and lived unthreatened until humans arrived in 1505. The easily controlled bird became a source of food for sailors and was attacked by animals introduced to the island by humans such as pigs, monkeys and rats. The population of Dodos rapidly decreased and last one was killed in 1681.
Rhinos
The Rhino (犀牛) horn is a highly prized item for Asian medicine. This has led to the animal being hunted in its natural habitat. Once widespread in Africa and Eurasia, most rhinos now live in protected natural parks and reserves（保護區(qū)）. Their numbers have rapidly decreased in the last 50 years, and the animals remain under constant threat from poachers（偷獵者）.
The Giant Panda
The future of the World Wildlife Fund's symbol is far from certain. As few as 1000 remain in the wild． The Chinese government has set up 33 panda reserves to protect these beautiful animals and made poaching them punishable with 20 years in prison. However, The panda's distinct black and white patched coat fetches a high price on the black market and determined poachers still pose（造成）one of the most serious threats to the animals continued existence.
Whales
The International Whaling Commission is fighting to ensure the survival of the whale species. Despite the fact that one-third the world's oceans have been declared whale sanctuaries（保護區(qū)）, 7 out of 13 whale species remain endangered． Hunted for their rich supply of oil, their numbers have decreased to just 300. Collisions（碰撞）with ships, poisonous pollution and being caught in fishing nets are other major causes of whale deaths.
Tigers
The last 100 years has seen a 95% reduction in the numbers of remaining tigers to between 5000 and 7000 and The Bali, Javan, and Caspian tigers are already extinct. The South China tiger is precariously close to disappearing, with only 20 to 30 still alive. Like the Rhino horn, tigers’ bones and organs are sought after for traditional Chinese medicines. These items are traded illegally along with tiger skins.
小題1:It implies that _______.
A．The Dodo lacked the ability to protect itself from other animals
B．Sailors to the Island of Mauritius lived mainly on the Dodo
C．The Dodo used to be a strong animal that liked fighting.
D．The Dodo, pigs, monkeys and rats were the natives to the Island of Mauritius
小題2:Which group of the following animals has already ceased to exist according to the text?
A．The Dodo, Rhino and Giant Panda．
B．The Rhino, Whale and South China Tiger.
C．The Rhino, Panda, Whale and Tiger.
D．The Dodo and the Bali, Javan, and Caspian tigers.
小題3:______ can serve as a cure for certain diseases.
A．The whale’s rich oil
B．The panda's black and white patched coat
C．The Rhino horn and tigers’ bones and organs
D．The Dodo’s delicious meat
小題4:Which of the following statements is NOT true?
A．The number of South China tigers has reached crisis point.
B．Many animals are threatened with extinction as a result of human activity.
C．People hunt for the endangered animals for high profit.
D．The Whale is the representing mark for the World Wildlife Fund．

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


If you are a recent social science graduate who has had to listen to jokes about unemployment from your computer major classmates, you may have had the last laugh. There are many advantages for the social science major because this high-tech “Information Age” demands people who are flexible(靈活的) and who have good communication skills.
There are many social science majors in large companies who fill important positions. For example, a number of research studies found that social science majors had achieved greater managerial success than those who had technical training or pre-professional courses. Studies show that social science majors are most suited for change, which is the leading feature(特點) of the kind of high-speed, high-pressure, high-tech world we now live in.
Social science majors are not only experiencing success in their long-term company jobs, but they are also finding jobs more easily. A study showed that many companies had filled a large percentage of their entry-level positions with social science graduates. The study also showed that the most sought-after quality in a person who was looking for a job was communication skills, noted as “very important”, by 92 percent of the companies. Social science majors have these skills, often without knowing how important they are. It is probably due to these skills that they have been offered a wide variety of positions.
Finally, although some social science majors may still find it more difficult than their technically trained classmates to land the first job, recent graduates report that they don’t regret their choice of study.
小題1:By saying that “you may have had the last laugh” in the first paragraph, the author means that you may have____.
A．shared the jokes with computer majorsB．earned as much as computer majors
C．found jobs more easily than computer majorsD．stopped joking about computer majors
小題2: Compared with graduates of other subjects, social science graduates ___.
A．a(chǎn)re ready to change when situations changeB．a(chǎn)re better able to deal with difficulties
C．a(chǎn)re equally good at computer skillsD．a(chǎn)re likely to give others pressure
小題3:The underlined word “l(fā)and” in the last paragraph probably means ___.
A．keep for some time B．successfully get C．immediately startD．lose regretfully
小題4:According to the text, what has made it easy for social science graduates to find jobs?
A．Willingness to take low-paid jobs.B．Readiness to gain high-tech knowledge.
C．Skills in expressing themselves.D．Part-time work experience.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Parents often believe that they have a good relationship with their teenagers. But last summer, Joanna and Henry noticed a change in their older son, suddenly he seemed to be talking far more to his friends than to his parents. “The door to his room is always shut,” Joanna noted.?
Tina and Mark noticed similar changes in their 14-year-old daughter. “She used to cuddle up(蜷伏) with me on the soft and talk,” said Mark.“Now we joke that she does this only when she wants something. Sometimes she wants to be treated like a young lady. The problem is figuring out which time is which.”?
Before age 11, children like to tell their parents what's on their minds.“In fact, parents are first on the list,” said Michael Riera, author of Uncommon Sense for Parents with Teenagers?.“This completely changes during the teen years.” Riera explained.“They talk to their friends first, then maybe their teachers, and their parents last.”?
Parents who know what's going on in their teenagers' lives are in the best position to help them. To break down the wall of silence, parents should create chances to understand what their children want to say, and try to find ways to talk and write to them. And they must give their children a mental break, for children also need freedom, though young.?Another? thing parents should remember is that to be friend, not a manager, with their children is a better way to know them.
小題1:“The door to his room is always shut” suggests that the son_______.?
A．is always busy with his studies
B．doesn't want to be disturbed?
C．keeps himself away from his parents
D．begins to dislike his parents?
小題2:What troubles Tina and Mark most is that _______.
A．their daughter isn't as lovely as before?
B．they can't read their daughter's mind exactly?
C．they don't know what to say to their daughter?
D．their daughter talks with them only when she needs help?
小題3:Which of the following best explains “the wall of silence” in the last paragraph?
A．Teenagers talk a lot with their friends.?
B．Teenagers do not want to understand their parents.?
C．Teenagers do not talk much with their parents.?
D．Teenagers talk little about their own lives.?
小題4:What can be learned from the passage?
A．Parents are unhappy with their growing children.?
B．Parents have suitable ways to talk with their teenagers.?
C．Parents should be patient with their silent teenagers.?
D．Parents should try to understand their teenagers.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

IS THERE LIFE ON EARTH?
There was great excitement on the planet of Venus(金星) this week. For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.?
The satellite was directed into an area known as Manhattan (named after the great Venusian astronomer Prof. Manhattan, who first discovered it with his telescope 20 000 light years ago).Because of excellent weather conditions and extremely strong signals, Venusian scientists were able to get valuable information as to feasibility(可行性) of a manned flying saucer(飛碟) landing on Earth.A press conference was held at the Venus Institute of Technology.?
“We have come to the conclusion,based on last week's satellite landing,” Pro. Zog said,“that there is no life on the Earth.”?
“How do you know this?” the science reporter of the Venus Evening Star asked. ?
“For one thing, Earth's surface in the area of Manhattan is composed of solid concrete(混凝土)and nothing can grow there. For another, the atmosphere is filled with carbon monoxide(一氧化碳) and other deadly gases and nobody could possibly breathe this air and survive.”?
“What does this mean as far as our flying saucer program is concerned?”?
“We shall have to take our own oxygen with us, which means a much heavier flying saucer than we originally planned. ”
“Are there any other hazards that you discovered in your studies?”?
“Take a look at this photo. You see this dark cloud floating over the surface of Earth? We call this the Consolidated Edison Belt. We don't know what it is made of, but it could give us a lot of trouble and we shall have to make further tests before we send a Venus Being there.”?
“If what you say is true, won't this set back the flying saucer program several years?”?
“Yes, but we shall proceed as soon as the Grubstart gives us the added funds.”?
“Prof. Zog, why are we spending billions and billions of zilches to land a flying saucer on Earth when there is no life there?”?
“Because if we Venusians can learn to breathe in an Earth atmosphere, then we can live anywhere.”
小題1:During the week of great excitement the Venusian scientists succeeded in getting important information on whether they can_______.
A．land a satellite with Venus astronauts on Earth
B．make a first?rate flying saucer?
C．get a Earth Being to Venus
D．direct a flying saucer into Manhattan?
小題2:According to Prof.Zog,the Venusians will have to take their own oxygen with them when they carry out their flying saucer program because_______.?
A．they need it on their way to the planet of Earth?
B．the Earth's atmosphere is filled with deadly gases?
C．oxygen is far from enough in the area of Manhattan where the saucer is to land?
D．there is no air on the planet of Earth?
小題3:The “dark black cloud” on the photograph refers to_______.?
A．the polluted air floating over the surface of Earth?
B．the mass of tiny drops of water floating above Earth?
C．the things that are unknown to everybody?
D．the dark clouds gathering before a storm breaks?
小題4:The author wishes to call our attention to the fact_______.?
A．that modern man has polluted his environment to such an extent that he might destroy himself if he went on like this?
B．that there is no point in spending billions and billions of zilches to land a flying saucer on Earth?
C．that pollution has become so serious a problem on Earth that even Venusians find life there unbearable?
D．that it is difficult, if not altogether impossible, to land a manned flying saucer on Earth

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Pierre is a 25-year-old penguin at the California Academy of Sciences. Due to his old age, he was going bald, which made him feel too cold to swim in the pool. Therefore, biologists at the academy had a wetsuit created for this penguin to help him get back in the swimming pool.

Unlike marine mammals, which have a layer of blubber to keep them warm, penguins depend on their waterproof feathers. Without them, Pierre was unwilling to jump into the swimming pool and ended up trembling on the side of the pool while his 19 peers played in the water.
"He was cold; he would shake," said Pam Schaller, a senior biologist. Schaller first tried a heat lamp to keep Pierre warm. Then she got another idea: if wetsuits keep humans warm in the cold Pacific, why not make one for Pierre?
Schaller designed the suit, which covered Pierre’s body and had small openings for his flippers.
"I would walk behind him and look at where there were any gaps, and cut and refit and cut and refit until it looked like it was extremely suitable," she said.
One concern was that the other penguins would reject Pierre in his new suit, but in fact, they accepted his new look. He swam freely and got along with others well, although he was the only penguin with a black stomach.
Schaller couldn’t say for sure whether the wetsuit allowed Pierre to recover his fine feathers, but "certainly we were able to keep him comfortable during a period of time that would have been very difficult for him to stay comfortable".
Pierre will take off his suit after his new feathers grow back.
小題1: Pierre felt too cold to swim in the pool because of _____.
A．not having a layer of blubberB．having few feathers due to old age
C．having no wetsuitD．others penguins rejecting him
小題2:The idea of making a wetsuit for Pierre came from _____.
A．total inventionB．the use of wetsuit on humans
C．the use of heat lampD．waterproof feathers
小題3: Schaller followed Pierre in order to see _____.
A．whether other penguins would reject him
B．if anywhere of wetsuit needed to be cut and refit
C．if the wetsuit kept warm
D．whether the wetsuit would keep the feathers from recovering
小題4:What does the underlined word in the second paragraph mean?
A．feeling scaredB．staying aloneC．shaking with coldD．keeping warm
小題5:The best title of the passage is _____.
A．Wetsuit for An Old PenguinB．Old Penguin Getting Bald
C．Unwilling to SwimD．Strange Look of Pierre

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

  In a recently published book, I came across some exercises with interesting names such as fishbone diagrams, lotus flowers and clustering. As I used these exercises in my classes, I noticed that students were interested. They said more and wrote more. They enjoyed expressing their ideas and sharing them in groups. They were no longer passively waiting for the bell , but actively taking part in the lesson. I find that creativity can act as a way to increase participation and improve fluency.
Creativity has become a popular word in recent years. Scholars in arts, psychology, business, education and science are all working to get a deeper understanding of it. Robert J. Stemberg is a creativity specialist and Yale professor of psychology. He defines creativity as “the ability to produce work that is both new (original) and appropriate(applicable to the situation ) ”. this definition is useful, as we want our students to use language in a new way and to use it correctly and properly. Mot scholars say there are two types of creativity: big “C” creativity and small “c” creativity. Big “C” creativity refers to genius level thinking that results in artistic masterpieces and scientific breakthroughs. Small “c” creativity refers to everyday level thinking that can be used in any situation our emphasis is on the latter. While it goes without saying that any of our students could go on to be the next Picasso or Edison, our aim is to help students produce more ideas and use language in a new way.
小題1:The underlined words “waiting for the bell ” in the first paragraph probably means______.
A．longing for a phone callB．hoping to have a bell
C．expecting the end of the classD．waiting to speak in the class
小題2: It can be inferred from the passage that the author thinks the exercises in the book were _____.
A．popularB．usefulC．scientificD．creative
小題3:When you use a familiar word in a new way, you are ________.
A creative in the sense of big “C” creativity.
B. creative in the sense of small “c” creativity..
C. not creative in the sense of big “C” creativity..
D. not creative in the sense of small “c” creativity.
小題4:The main purpose of the passage is to _________.
A. show how useful the book is.
B, explain what creativity 
C. discuss how one can be creative 
D. tell what reaching aims at 

查看答案和解析>>

同步練習冊答案