The foreigner tried his best, but he still couldn't make his point _____.
A. understand B. understanding
C. to understand D. understood
科目:高中英語 來源:八大名校高考全真模擬試題 題型:050
閱讀下面短文,從每小題所給的A、B、C、D四個選項中選出最佳選項,并在答題卡上將該項涂黑。
Rats use their tails to help keep body temperature. The rat has specialised blood vessels which control the amount of blood flowing to its tail. Blood flowing into the furless skin of the tail carries heat which is then let out of the body. The rat can direct anywhere between 0.1 and 10 per cent of its cardiac output(心輸出量) to the tail. Under ideal conditions, it can get rid of up to 20 per cent of its metabolic(代謝) heat in this way. On the other hand, controlling blood flow to the tail reduces heat loss in cold weather. It is interesting to note that the length of the rat's tail is partly determined by the temperature of the environment in which it is raised.
Observing my three rats suggests that the long tail-usually around the same length as the body-is used for balancing. Although rats cannot grasp objects with their tails, they do seem able to control the muscles along the tail's length with considerable precision(精確). If a rat is running along a narrow surface such as a rope, the tail constantly flicks from side to side to steady them.
When my rats are eating, they rest on the edge of the food bowl, which is about 20 centimetres from the floor of the cage, grasping the bowl with their back paws and eating with their front paws. In doing this their ends stick out quite a long way over the side of the bowl so that it looks as if they should fall off backwards.
As an experiment, I moved the food bowl to about 10 centimetres above the floor of the cage, which is about the length of a rat's tail. Now, instead of curling their tails under the bowl, the rats stretch out their tails and point them straight down so that they touch the floor, supporting their bodies with this “third leg”.
1.A rat's tail is useful in the way ________.
[ ]
A.of controlling the amount of blood flowing
B.to direct its cardiac output
C.of keeping balance and maintaining body temperature
D.to be used as another leg
2.What is true about the rat's tail according to the passage?
[ ]
A.The temperature of where the rat grows determines the length of its tail.
B.The tail is more or less as long as its body.
C.More blood will flow to the tail in cold winter weather to keep it warm.
D.It can get rid of 20% of its metabolic heat under any weather condition.
3.Which of the following has nothing to do with keeping balance?
[ ]
A.The tail flicks from side to side when a rat is running along a rope.
B.The tail sticks out quite a long way curling over the side of the bowl.
C.The tail stretches out straight down to touch the floor like a “third leg”.
D.The tail reduces the body temperature bay letting out heat from it.
4.Which one of the statements below is a wrong description?
[ ]
A.The rat uses fore and hind paws as well as its tail when eating in a bowl.
B.It's better to have the bowl 10 to 20 cm above the cage floor when feeding rats,
C.Rats sometimes uses their tails to grasp things they want.
D.Home-raised rats are more skilled at using their tails.
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科目:高中英語 來源:南通高考密卷·英語 題型:050
閱讀理解:
閱讀下列短文,從每題所給的四個選項(A、B、C和D)中,選出最佳選項.
University Physics is intended for students of science and engineering. Primary emphasis is on physical principles and problem-solving; historical background and specialized practical applications have been given a place of secondary importance. Many worked-out examples and an extensive collection of problems are included in each chapter.
In this new edition, the basic philosophy and outline and the balance between depth of treatment and breadth of subject-matter coverage are unchanged from previous editions. We have tried to preserve those features that users of previous editions have found desirable, white incorporating a number of changes that should enhance the book's usefulness.
The textbook is adaptable to a wide variety of course outlines. The entire textbook can be used for an intensive course two or three semesters in length. For a less intensive course, many instructors will want to omit certain chapters or sections to tailor the book to their individual needs. The arrangement of this edition facilitates this kind of flexibility.
Conversely, however, many topics that were regarded a few years ago as of peripheral (外圍的,次要的) importance and were omitted from introductory courses have now come to the fore again in the life sciences, earth and space science, and environmental problems. An instructor who wishes to stress these kinds of applications will find this textbook a useful source for discussion of the appropriate principles.
1.This textbook lays stress on________.
[ ]
A.the exposition of physical principles
B.the principles of physics and their application
C.the development of physics
D.the application of physics in different fields
2.Compared with the old one, this new edition________.
[ ]
A.has been made more applicable
B.is easier to learn
C.covers a wider range of subject-matter
D.has improved the balance between theory and practice
3.One of the features of this textbook is that________.
[ ]
A.some contents are dealt with in terms of philosophy
B.it has an outline for each chapter
C.it introduces the physical principles in great length
D.it can be used for different course arrangements
4.The underlined words “conversely, however” (Paragraph 4) indicate that________.
[ ]
A.many topics can be emphasized though they were not covered in the old edition
B.many topics can be emphasized though they were usually omitted by instructors
C.many topics have been added to the new edition as they were not covered in the old one
D.many topics have been added to the new edition though they can be omitted by the instructors
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科目:高中英語 來源:高中英語復(fù)習(xí)題 題型:050
A hermit crab that has found an empty shell for its new home may share its dwelling. It chooses a sea anemone to settle on top of the shell. This flower-like animal's usual home is on a rock.
The sea anemone gains by the partnership. As it rides on the shell, it has a better chance of getting food. Pieces of food torn by the crab as it dines may also reach the anemone's mouth.
The crab profits in its turn. Its enemies find the crab harder to see and to attack. Around the anemone's mouth are tiny arms called tentacles. These shoot out threads that poison and even kill.
A hermit crab sometimes becomes a "two gun" wanderer. It carries an anemone on each claw of its first pair of legs.
1.The crab in this partnership is the______.
A.spider crab B. fiddler crab C. hermit crab D. sponge crab
2.Its partner is described as________.
A.a(chǎn) sea plantB. a sea flower
C.a(chǎn)n animal-like flower D. a flower-like animal
3.The crab's partner lives________.
A.inside the shell B.on top of the shell
C.on a nearby rock D.None of the above
4.The sea anemone gains because it has a better__________.
A.supply of food B.place to hide
C.Both A and B D. Neither A nor B
5.The crab gains because it is________.
A.better hidden from its enemies B. protected by the anemone's tentacles
C.Both A and B D.Neither A nor B
6.A "two-gun" crab is protected by________.
A.two anemones settled on its shell B.a(chǎn)n anemone on each fore claw
C.a(chǎn)n anemone on each of its hindmost pair of legs D. two guns
7.In the crab-anemone relationship, the two animals______.
A.both profit while living together B.work together only now and then
C.try to harm each other D.each use tentacles against enemies
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科目:高中英語 來源: 題型:054
完形填空:
閱讀下面短文,掌握其大意,然后從1~25各題所給的四個選項中,選出一個最佳答案.
A photographer is a person who takes photos as a business or an art. It is often thought that his work is not only full of 1 but is very safe as well, and no one can imagine how 2 his work 3 .
Two photographers were 4 through a thick forest in Alaska, 5 at capturing (capture v. 搶拍) the wild-life on film. As there was nothing interesting to take pictures of, they were feeling 6 when they 7 sight of a brown bear that had caught a large fish by a quiet brook. The wild beast found them too, and stood on its 8 legs to get 9 sight of the two men. While doing this, the bear made a wonderful pose (n.姿勢) for the two 10 photo graphers.
Suddenly the bear 11 at them, while the two men kept right on taking photos of the 12 beast. as the beast was 13 very fast towards them, one of the men turned around right away and rushed to a tall tree nearby. He 14 to the top of the tree as quickly as he could. The other man, who could not climb a tree, 15 lay down on the ground, pretending 16 . When the bear 17 over him and shuffed (n.嗅)him all over, the man shut his eyes tightly, 18 his breath and 19 make any movement. While all this was going on, the man in the tree was 20 pictures of the 21 scenes. after a while, the bear went away 22 , because bears 23 dead men.
When all was safe, the photographer in the tree came down and said to his friend,“The same story 24 was told in Aesep's Fables (伊索寓言) has just happened to us, and I 25 no chances to take the photos of the wonderful scenes!”
1. A. happiness |
B. glad |
|
C. sadness |
D. pleasure |
[ ] |
2.A. interesting |
B. dangerous |
|
C. useful |
D. important |
[ ] |
3.A. sometimes is |
B. always is |
|
C. is usually |
D. usually is |
[ ] |
4.A. running |
B. riding |
|
C. travelling |
D. driving |
[ ] |
5.A. good |
B. wanting |
|
C. planning |
D. aiming |
[ ] |
6.A. sorry |
B. satisfied |
|
C. comfortable |
D. helpless |
[ ] |
7.A. lost |
B. caught |
|
C. were in |
D. were out of |
[ ] |
8.A. fore |
B. left |
|
C. right |
D. hind |
[ ] |
9.A. a different |
B. the same |
|
C. a better |
D. better |
[ ] |
10.A. mad |
B. funny |
|
C. happy |
D. excited |
[ ] |
11.A. stared |
B. jumped |
|
C. shouted |
D. looked |
[ ] |
12.A. pleased |
B. angry |
|
C. worried |
D. funny |
[ ] |
13.A. rolling on |
B. jumping up |
|
C. drawing on |
D. running out |
[ ] |
14.A. climbed |
B. reached |
|
C. jumped |
D. walked |
[ ] |
15.A. slowly |
B. immediately |
|
C. after some delay |
D. after some time |
[ ] |
16.A. to be dead |
B. to die |
|
C. to be dying |
D. to have died |
[ ] |
17.A. bent |
B. sat |
|
C. lay |
D. took |
[ ] |
18.A. took |
B. held |
|
C. was out of |
D. taking |
[ ] |
19.A. daren't |
B. tried not to |
|
C. not trying to |
D. not tried to |
[ ] |
20.A. busy to take |
B. ready to take |
|
C. busy taking |
D. worth taking |
[ ] |
21.A. strange |
B. beautiful |
|
C. famous |
D. exciting |
[ ] |
22.A. excitedly |
B. disappointedly(失望地) |
|
C. gladly |
D. sadly |
[ ] |
23.A. never eat |
B. don't like |
|
C. never touch |
D. never tend |
[ ] |
24.A. as |
B. that |
|
C. which |
D. what |
[ ] |
25.A. got |
B. had |
|
C. found |
D. lost |
[ ] |
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科目:高中英語 來源: 題型:
It was_____late to catch a bus after the party, there fore we called a taxi.
A. too very B.much too C. too much D. far
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