Wind is the great maker of waves. There are exceptions, such as the tidal waves, sometimes produces by earthquakes under the sea. But the waves most of us know are produced by winds blowing over the sea.?Now before constructing an imaginary life history of a typical wave, we need to know certain physical things about it. A wave has height, from trough (low point)to crest (high point),and it has length—the distance from this crest to that of the following wave. The period of the wave means the time it takes for succeeding crests to pass a fixed point. None of these things stays the same— for all depend upon the depth of the water and many other matters.?
The water that makes up a wave does not advance with it across the sea. Each drop of water turns around in a little circle with the passing of the wave, but returns very nearly to its original position. And it is fortunate that this is so, for if the huge masses of water that make up a wave actually moved across the sea, sailing would be impossible.
If we want to find the speed of a wave, we may use the following way:
Speeding="Wavelength×Frequency"
Here, wavelength is the distance between two high points (crests), frequency means the number of cycles per second.?
41.What causes waves according to the passage??
Earthquakes and nothing else.   B. Wind and volcanos.
C. Wind and earthquakes.          D. Wind and water.
42.Which of the following is true according to the text??
A. The water of a wave moves away across the sea.?
B. The water of a wave remains almost in the same place.?
C. The water of a wave goes with the passing of the wave.?
D. The length of a wave means the distance between crest and trough.
43.The underlined word “succeeding” means__________.?
A. reaching an aim    B. doing well?  C. following after   D. taking place
44.If the speed of wave 1 is 100 cm/s, and its frequency 10;and the frequency of wave 2 is 300,while its speed is twice that of wave 1.Which of the following is true??
A. The wave-lengths of the two are equal.?
B. The wave-length of wave 1 is 10 times longer than that of Wave 2.?
C. The wave-length of wave 2 is longer than that of wave 1.?
D. The wave-length of wave 1 is longer than that of wave 2.?
 
小題1:C
小題2:B
小題3:C
小題4:D
略
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解


When I lived in Spain, some Spanish friends of mine decided to visit England by car. Before they left, they asked me for advice about how to find accommodation (住所). I suggested that they should stay at “bed and breakfast” houses, because this kind of accommodation gives a foreign visitor a good chance to speak English with the family. My friends listened to my advice, but they came back with some funny stories.
“We didn’t stay at bed and breakfast houses,” they said, “because we found that most families were away on holiday.”
I thought this was strange. Finally I understood what had happened. My friends spoke little English, and they thought “VACANCIES” meant “holidays”, because the Spanish word for “holidays” is “vacaciones”. So they did not go to house where the sign outside said ‘VACANCLES’, which in English means there are free rooms. Then my friends went to house where the sign said ‘NO VACANCLES’, because they thought this meant the people who owned the house were not away on holiday. But they found that these houses were all full. As a result, they stayed at hotels!
We laughed about this and about mistakes my friends made in reading other signs. In Spanish, the word “DIVERSION” means fun. In English, it means that workmen are repairing the road, and that you must take a different road. When my friends saw the word “DIVERSION” on a road sign, they thought they were going to have fun. Instead, the road ended in a large hold.
English people have problems too when they learn foreign languages. Once in Paris. when someone offered me some more coffee, I said ‘Thank you’ in French. I meant that I would like some more, However , to my surprise the coffee pot was taken away! Later I found out that ‘Thank you’ in French means ‘No, thank you.’
1. My Spanish friends wanted advice about ______.
A. learning English                     B. finding places to stay in England
C. driving their car on English roads        D. going to England by car
2. I suggested that they stay at bed and breakfast houses because ______.
A. they would be able to practise their English
B. it would be much cheaper than staying in hotels
C. it would be convenient for them to have dinner
D. there would be no problem about finding accommodation there
3. “NO VACANCIES” in English means ______.
A. no free rooms        B. free rooms      C. not away on holiday    D. holidays
4. If you see a road sign that says ‘Diversion’, you will ______.
A. fall into a hole
B. have a lot of fun and enjoy yourself
C. find that the road is blocked by crowds of people
D. have to take a different road
5. When someone offered me more coffee and I said “Thank you” in French, I ______.
A didn’t really want any more coffee      B. wanted them to take the coffee pot away
C. really wanted some more coffee        D. wanted to express my politeness

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空


第三部分：完形填空（共20小題；每小題1.5分，滿分30分）
Two men, both seriously ill, occupied the same hospital room. One man was allowed to sit up in his bed for an hour each   16   to help drain the fluid(排出流質(zhì)) from his lungs. His bed was next to the room’s only window. The other man had to spend all his time  17   on his back.
The men talked for hours on end. They spoke of their families, their homes, their jobs and a whole lot of things. Every afternoon when the man in the bed by the window could sit up, he would pass the time by  18   to his roommate what he could see   19   the window.
The man in the other bed began to   20   for those one-hour periods when his   21   would be broadened and brightened by all the activity and color of the world outside.
The window overlooked a   22   with a lovely lake. Ducks and swans played on the water while children   23   their model boats. Young lovers walked arm in arm among   24   of every color and a fine   25   of the city skyline could be seen in the   26  . As the man described all this, the man on the other side of the room would close his eyes and  27   the beautiful scene.
Days and weeks passed. One morning, the day nurse arrived to find the man by the window, had died   28  in his sleep. Later, the other man asked   29   he could be moved next to the window. The nurse was happy to make the switch.
Slowly, painfully, he managed to   30   and take his first look at the   31   world outside. Surprisingly, it   32   a blank wall. 　　
The next day he learned from the nurse that the man was   33   and could not   34   see the wall. She said, “Perhaps he just wanted to   35   you.”
16. A. morning             B. afternoon          C. evening             D. night
17. A. flat                        B. quiet                 C. still                D. calm
18. A. listening             B. talking                 C. describing     D. explaining
19. A. beyond           B. outside              C. behind                 D. near
20. A. look                   B. live                   C. prepare            D. work
21. A. health            B. dream               C. world            D. career
22. A. garden            B. farm                 C. mountain       D. park
23. A. made             B. rowed               C. took               D. sailed
24. A. trees                   B. flowers             C. houses           D. birds
25. A. photo             B. map                  C. view             D. appearance
26. A. distance                 B. hospital             C. future           D. sky
27. A. enjoy              B. experience     C. sense             D. imagine
28. A. peacefully           B. painfully           C. sadly             D. bravely
29. A. when              B. if                  C. how              D. why
30. A. climb up             B. stand up            C. sit up            D. turn up
31. A. real                    B. noisy                C. ordinary            D. new
32. A. contained            B. covered             C. connected      D. faced
33. A. mad                   B. blind                 C. ill                     D. dead
34. A. yet                        B. just                   C. even             D. clearly
35. A. support           B. fool                  C. cure              D. encourage

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

完型填空（共20分）
A boy selling magazines walked up to a house people seldom visited. The house was old and the owner  36  came out. When he did come out he wouldn’t say hello to anybody  37  simply stared at them.
The boy knocked on the door and  38 . as he was ready to  39  away, the door slowly opened. “What do you want? ” the old man said.
“Uh, sir, I’m selling these magazines and I was  40  if you’d like to buy one.” The old man  41  stared at the boy. The boy could see the inside of the house and  42  some dog figurines （小雕像）. “Do you  43  dogs?” the boy asked. “Yes, I do. They’re my family here and they’re all I have.” The boy felt sorry for the man, as he seemed to be very  44 . “I’ve a magazine here for collectors. It’s perfect for you. I also have one about dogs since you like dogs so much.” But the old man said, “I need  45  of the magazines, now goodbye.”
The boy was sad. He went home and then an idea 46  to him. He had a little dog figurine. He walked back to the old man’s house with the  47 . He knocked on the door again and this time the old man came right to the door. “Boy, I  48  I told you no magazines.”
“No, sir. I know that. I wanted to bring you a  49 . ” The boy handed him the figurine and the old man’s face  50 . “It’s a Golden Retriever. I have one at home. This one is  51  you. ” The old man was  52 ; no one had ever shown him so much  53 . “Boy , you have a big  54 . Thank you!” From that day on the old man   55 coming out of the house and talking with people.
36．A．regularly             B．never          C．hardly                  D．nearly
37．A．but                                 B．when          C．a(chǎn)s                          D．so
38．A．hurried                          B．remained   C．waited                 D．left
39．A．drive                     B．run                        C．escape                 D．walk
40．A．wondering          B．saying                  C．doubting             D．hoping
41．A．ever                      B．yet                        C．still                       D．just
42．A．loved                    B．noticed                C．contacted  D．sensed
43．A．help                      B．raise           C．collect                  D．like
44．A．lonely                            B．cruel           C．old                        D．terrible
45．A．nothing                B．none           C．either                   D．some
46．A．happened           B．reached               C．brought               D．occurred
47．A．fear                      B．magazine  C．figurine                D．idea
48．A．imagined             B．thought               C．wished                 D．expected
49．A．friend                            B．dog                       C．gift                        D．book
50．A．went up               B．turned up  C．grew up               D．lit up
51．A．with                      B．for                         C．on                         D．in
52．A．surprised            B．calm            C．disappointed      D．encouraged
53．A．pity                       B．kindness              C．politeness D．happiness
54．A．hand                     B．eye                       C．heart          D．head
55．A．continued           B．started                C．a(chǎn)voided               D．risked

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


Years ago, a cigarette commercial asked if you were smoking more, but enjoying it less. That describes the way many of us live today. We are doing more, but enjoying it less. And when that doesn’t work, we compound the problem. In our frantic search for satisfaction, we try stuffing still more into our days, never realizing that we are taking the wrong approach.
The truth is simple; so simple it is hard to believe. Satisfaction lies with less, not with more. Yet, we pursue the myth that this thing, or that activity, will somehow provide the satisfaction we so desperately seek.
Arthur Lindman, in his devastating book, “The Harried Leisure Class,” described the futility of pursuing more. His research focused on what people did with their leisure time. He found that as income rose, people bought more things to occupy their leisure time. But, ironically, the more things they bought, the less they valued any one of them. Carried to an extreme, he predicted massive boredom in the midst of tremendous variety. That was more than twenty years ago, and his prediction seems more accurate every year.
Lindman, of course, is not the first to discover this. The writer of Ecclesiastes expressed the same thought thousands of years ago. It is better, he wrote, to have less, but enjoy it more.
If you would like to enjoy life more, I challenge you to experiment with me. How could you simplify your life? What could you drop? What could you do without? What could you stop pursuing? What few things could you concentrate on?
The more I learn, the more I realize that fullness of life does not depend on things. The more I give up, the more I seem to gain. But words will never convince you. You must try it for yourself.
1．Arthur Lindman predicted twenty years ago that ______.
A. more things brought more value   B. the more people had, the less they valued them
C. people didn’t like to pursue more  D. massive boredom came from less variety
2．What does the article suggest to make our life happier?
A. To enjoy more things.            B. To buy more things.
C. To sell things we do not need.     D. To get rid of useless things.
3．The passage is probably written to ___________.
A. introduce Arthur Lindman and his book       B. tell the readers what is satisfaction
C. introduce how to simplify people’s life       D. persuade people to simplify their life

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

完形填空（共20小題；每小題1.5分，滿分30分）
Tom is a worker in my factory and he is a little bit dirty. I have been taking   36   of him for years and years, he always wears an old red hat and carries a   37   bag. He usually spends his break time and his lunchtime by walking around to   38   the unused tins around.
Once I saw him by his   39   , with a lot of rubbish bags, which were full of aluminum(鋁) tins. He threw them into the back of his car and then   40   the car. Being very curious, I got into my car to   41   him. He drove   42   he reached the entrance to a wide, empty parking area, but did nothing more.
Today, I was   43   one of the broken machines during lunchtime when this“tin man”came along with his bag. As usual, he   44   the tins around the place. My   45   , who was worried about how the   46   caused by the machine would affect production, was standing there watching me.
When I finished my job, my manager asked the “tin man” about what he would   47    the tin that he had collected. I had    48   even though about asking this kind of question,  49  I had always thought that this “tin man” would sell the   50   to the recycling place
51  ,this “tin man” answered, “I will give them to my neighbor,  52   has epilepsy(癲癇病) and is unable to work.” I was   53   to hear this, and I asked him, “You   54   you are collecting all those tins just to help your neighbor?”
“I know it doesn’t help very much,” he said, “   55   I try my best to help him.” It was the most beautiful moment in my life and made me feel very humble(卑鄙的).
36. A. hold            B. care            C. charge             D. notice
37. A. plastic          B. rubbish          C. paper             D. metal
38. A. collect          B. find            C. hide                D. spread
39. A. house           B. store           C. machine             D. car
40. A. got out of        B. broke up        C. jumped into          D. settled down
41. A. follow          B. block           C. inspect              D. catch
42. A. since           B. until            C. when               D. after
43. A. decorating       B. performing      C. repairing             D. selecting
44. A. turned up        B. put up          C. set up               D. picked up
45. A. manager         B. workmate       C. neighbor             D. friend
46. A. power           B. delay           C. signal               D. harm
47. A. do with          B. deal with        C. go with            D. put up with
48. A. seldom          B. always          C. nearly              D. never
49. A. unless           B. because         C. though              D. if
50. A. machine         B. cars            C. tins                 D. bags
51. A. Certainly        B. Briefly          C. Surprisingly          D. Fortunately
52. A. who            B. whom           C. which               D. that
53. A. shocked         B. interested        C. satisfied             D. concerned
54. A. announce        B. mean          C. say                 D. declare
55. A. instead          B. however        C. but                 D. and

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


In the past decade the popularity of rock climbing has greatly increased, and so has the number of injuries. It has been estimated that rock climbing is now enjoyed by more than 9 million people in the US each year. Study findings revealed a 65 percent increase in the number of patients that were treated in US emergency departments for rock climbing-related injuries between 1991and 2008.
The study, published in the online issue of the American Journal of Preventive medicine,found that about 40,000 patients were treated in US emergency departments for rock climbing-related injuries between 1991 and 2008. The most common types of rock climbing –related injuries were fracture(骨折) and sprains （扭傷）。The ankle was the most common body part to be injured (40%).Climers in the study ranged in age from 2 to 74, with an average age of 26. The study also found that women took up a quarter of the injuries.
Falls were the primary reason for injury with over three-quartes of the injuries occurring as the result of a fall. The severity of related injuries had a lot to do with the height of the fall. Patients who were injured after falling from a height over 20 feet were 10 times more likely to be treated than patients who were injured falling from 20 feet or lower.
“We found that the climbers who fell from heights higher than 20 feet took up 70 percent of the patients treated for a rock climbing-related injury, explained the study author Lara McKenzie, PhD, director at the Center for Injury Research and Policy at Nationwide Hospital. “This trend, combined with the fact that rock climbers have a higher hospitalizaton rate than other sports and recreational injuries, demonstrates the need to increase injury prevention efforts for climbers.
1.Which body part is most likely to get injured for a climber ?
A.The arm        B.The ankle     C. The knee     D. The hand
2.How many women climbers in American got injured while climbing a rock between 1991 and 2008 ？
A.About 40,000   B.About 30,000    C.About 20,000  D.About 10,000
3.The severity of climbers’fall-related injures is mainly related to ______.
A.the height of the fall.           B.the climber’s age.
C.the climber’s health condition    D.the climber’s climbing experience.
4.The underlined word “demonstrates” in the last paragragh can be replaced by ________.
A.demands       B.prevent        C.proves        D.describes

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


The Mona Lisa, one of the world’s most famous paintings, has been recreated with 3,604 cups of coffee—and 564 pints of milk. The different colors were created by adding no, little or lots of milk to each cup of black coffee.
The recreated Mona Lisa measured 20 feet long and 13 feet wide. It took a team of eight people three hours to complete the work. It was created for The Rocks Aroma Festival in Sydney, Australia, and seen by 130,000 people who attended the one-day coffee-lovers event.
Elaine Kelly, one of the organizers from the Sydney Harbor Foreshore Authority, was delighted with the result. She said, “Each coffee cup was filled with varying amounts of milk to create the different shades(色度) of the painting. We wanted to create an element of surprise and a sense of fun in the way we communicated with the public.”
“Once we had the idea of creating an image(像) out of coffee cups we searched for something iconic（有代表性的）to reproduce(復(fù)制).And after some time we chose the most iconic painting in history. The Mona Lisa has been reproduced so many times in so many different mediums but, as far as we know, never out of coffee,” Kelly continued. “Besides, the idea is practical.”
“It was fantastic. It really looked like the famous painting—the Mona Lisa. It was wonderful,” said one visitor.
After much planning it was great to see it coming together so well and the 130,000 people who attended the event certainly enjoyed it and were deeply attracted by it,” said Kelly.
1.How were the different colors of the recreated Moma Lisa created?
A.By adding different amounts of black coffee to each cup of milk.
B.By adding different amounts of milk to each cup of black coffee.
C.By using paints of different colors
D.By using different kinds of coffee
2.How large is the recreated Mona Lisa?
A. 20 square feet               B. 260 square feet
C. 564 square feet              D. 3,604 square feet
3.The people who saw the recreated Mona Lisa are all_______ lovers.
A.Mona Lisa      B.milk     C.coffee     D.painting
4.The event organizers chose to recreate the Mona Lisa for the following reasons EXCEPT that _________ .
A. the Mona Lisa is a very iconic painting in history
B. the Mona Lisa has never been reproduced out of coffee
C. the idea can be actually carried out
D. it is very easy to do so

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空


補(bǔ)全對(duì)話（根據(jù)對(duì)話內(nèi)容，從對(duì)話的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)，將其字母序號(hào)寫在答題卡上。選項(xiàng)中有兩項(xiàng)為多余項(xiàng)。每小題2 分；滿分10分）
—He is very good , isn’t he ?
—16__________
—I said the singer was great .
—17__________
—Have you seen him here before?
—18_______I think he  probably writes the music and words because I’ve never heard any of the songs before .
— It’s not fair.
—19_________
—People with musical ability like that have to stand around here to make a living .
—Perhaps he enjoys it or makes more money than you think.
—20___________
A．What do you mean ?
B．Sorry , what did you say ?
C．I hope so .
D．Do you like popular music ?
E. Be quiet , listen to him .
F. Yes , and interesting to watch
G. Oh , yes . He’s always at exactly the same place on Saturdays when I come into town

查看答案和解析>>

同步練習(xí)冊(cè)答案