题目内容
Even if you are a good high-jumper, you can jump only about seven feet off the ground. You cannot jump any higher because the earth pulls you hard. The pull of the earth is called gravity.
You can easily find out the pull of the earth. If you weigh yourself, you will know how much gravity is pulling you. 来源:
Since there is gravity, water runs down hill. When you throw a ball into the air, it falls back down. Because of gravity, you do not fall off the earth as it whirls (旋转) around. 来源:
Then, can we get away from the earth and go far out into space? Now you can do it, because spaceships have been invented. Then spaceship will go so fast that it can escape (逃出) the earth’s gravity and carry you into space. 来源:
In this passage, the word “gravity” means_______.来源:
A. the pull of everything. B. the force of attraction(吸引) among objects.
C. the force which attracts objects towards the centre of the earth来源:
D. the force which attracts the earth towards the sun.
When you slip(滑) you always fall to the ground because________来源:
A. the earth always turns round. B. the earth has gravity
C. the earth’s gravity is greater than your weight. D. you are careless. 来源:
Gravity is strong that_______
A. it can throw a ball into the air. B. it makes you jump only seven feet.
C. it can let you fly away from the earth. D. it can keep everything on earth.
Because of gravity,________
A. water flows everything. B. we can go everywhere by ship. 来源:
C. water always flows downwards. D. fish can live in water.
We can get away from the earth by spaceship because________
A. the spaceship goes very fast. B. the earth can’t pull the spaceship.
C. the spaceship has a strong force. D. the spaceship can jump higher than others.
阅读下面短文,掌握其大意,然后从36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
I was coaching girls’ track in Iowa and there was a young discus(铁饼)thrower on the team with 36 potential(潜力). Here goes her story.
At the end of our training 37 the district track meet, this discus thrower, Lucy, asked me if she 38 come to the school on Sunday for a little 39 training. I agreed. The year before, she had placed second at the district meet and 40 missed going to the state meet. She had won every discus event, 41 that district meet! And, her throws in the competitions had 42 been between 106’1” and 110’10”.
Something began to 43 me. Why couldn't Lucy 44 to get the discus to 111 feet? I wondered if it was more a psychological barrier(心理的障碍) 45 a physical one. I decided to try something 46 . I made up my mind to 47 to Lucy.
On Sunday, after her drills, I said, “Why don’t you throw five or six good ones for me to 48 ?” She began to throw again, but 49 were farther than what she had already thrown. But, I didn’t tell Lucy. As I was measuring the 50 one, I pulled out some more tape (量尺) and yelled out to her, “ Come to see this! This one is 51 ! ” It wasn’t. Lucy, thinking that this was a personal best, jumped wildly into the air in 52 .
The next afternoon, at the district meet, Lucy 53 with a personal best throw of 114’10”! Just 24 hours after I had lied to her. However, this time she had 54 thrown the discus four feet further than she had ever thrown it before.
Sometimes we 55 our own barriers in our mind. So learn to take control of your mind.
A. little B. great C. no D. limited
A. after B. during C. since D. before
A. could B. must C. should D. would
A. helpful B. extra C. real D. regular
A. luckily B. completely C. narrowly D. probably
A. except B. including C. despite D. with
A sometimes B. always C. never D. seldom
A. frighten B. please C. shock D. bother
A. seem B. pretend C. need D. ask
A. apart from B. rather than C. because of D. according to
A. impossible B. familiar C. new D. easy
A. lie B. turn C. reply D. call
A. look B. measure C. match D. take
A. many B. all C. some D. none
A. worst B. closest C. first D. final
A. higher B. farther C. bigger D. longer
A. excitement B. anxiety C. puzzlement D. anger
A. disappeared B. lost C. won D. arrived
A. actually B. hardly C. nearly D. only
A. break B. remove C. take D. set
When we talk about boomerangs (回飞棒), we usually mean the curved devices(弯曲的设备) that return to you when you throw them, but there are actually two different kinds of boomerangs: the returning type and the non-returning type. Most returning boomerangs measure 30 to 60 cm across. Non-returning boomerangs are usually heavier and longer; typically 1 meter or more across, usually used as hunting weapons.
Experts believe the invention of boomerangs was mostly a matter of trial and error. First let’s consider how a primitive hunter might have come up with a non-returning boomerang. In nature, there are plenty of sticks that are bent in a curve like a boomerang, and people probably threw the sorts of sticks all the time. Because of the stabilizing motion of the two branches of the stick, this sort of stick would have stayed in the air longer and would have been easier to send in the desired direction. Primitive humans noticed this and so they started specifically seeking out bent sticks. Then they started selecting the best curved sticks (thinner, longer ones work better) and were soon making some changes so they were especially suited for taking down birds and animals.
Experts aren’t really sure when and where people first developed returning boomerangs, but the Aborigines of Australia are generally credited with the invention. The Aborigines used non-returning boomerangs, which they called kylies, widely in hunting, and the theory is that at some point, one or more Aborigines used a kylie with the particular shape of a boomerang and noticed that it traveled in a curve. That might have been a pure accident.
The amazing flight pattern of the new discovery didn’t really help out much in hunting—it actually made it harder to aim accurately—but it was, of course, really cool. Evidently, the Aborigines perfected the boomerang design and throwing technique for the simple pleasure of it. However, the boomerang did have some limited use in hunting. The Aborigines would set up nets in trees and then throw the boomerang into the air while making a hawk(鹰)call. This would scare birds so they would fly down into the nets.
51. What does the second paragraph mainly tell us?
A. How primitive men invented returning boomerangs.
B. How non-returning boomerangs were invented.
C. How the Aborigines of Australia use boomerangs.
D. How to throw and catch returning boomerangs.
52. We learn from the passage that returning boomerangs_________.
A. were developed from non-returning boomerangs
B. were invented earlier than non-returning boomerangs
C. are generally called“kylies”by the Aborigines
D. are heavier and longer than non-returning boomerangs
53. From the fourth paragraph, we can infer non-returning boomerangs are more suitable for hunting because _________.
A. they look more frightening
B. they can move in a circle
C. they are easier to aim
D. they are lighter to carry
54. According to the passage,it is most probable that Aborigines_________.
A. first used bent sticks to frighten animals
B. never used returning boomerangs in hunting
C. liked to play with the kylie for pleasure
D. are the inventor of returning boomerangs
下面文章中有5个段落需要添加首句。请从以下选项(A、B、C、D、E和F)选出适合各段落的首句,并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。
A. Time can run out.
B. Tomorrow won’t be better.
C. Ideas need time to develop.
D. Your professor will be impatient.
E. You blow off your chances for help.
F. You are probably overestimating (高估)the pain.
Never Put off Tomorrow What You Can Do Today
Want to put off studying for the physics test? Or writing that thirty-five-page research paper on future uses of biotechnology? Sure you do? And who wouldn’t? But it’s still a silly idea to put off doing something until a future time. Here is why ....
1.__________. The task will be still the same. It won’t be any more fun and you still won’t want to do it. As the deadline gets closer and closer, the task seems to become larger and larger if you haven’t started the work. And the stress increases. Now not only do you have to write that paper, you have to do it under great pressure.
2._________ . Before you start, it seems that the task is unlikely to be accomplished. But you know what? You’re probably miscalculating. Get started -------- maybe on a small piece ------ And you will discover that you have more resources and know more about the subject than you thought. Result? You won’t experience nearly as much suffering as you expected to. Things are guaranteed ------ 100 percent ------- to get better.
3._____________ . If you leave your work before the night before it’s due, you give up the possibility of getting input from your professor. Professors regularly give advice ----- or at least a few useful tips ---- during office hours. Unfortunately though, they don’t usually hold office hours at midnight, so you will be out of luck when you discover the night before the midterm that you have no idea how to do the questions that will count for two-thirds of your grade.
4.________ . Ever wonder why the professor assigns the papers two weeks before it’s due? It’s because he or she expects you to be thinking about the issue, or doing the research, for two weeks. No, not every waking moment, but at least some of the time. After all, the professor could just as easily have given the assignment one week before it was due if he or she expected less thinking. When you throw together a paper or a report at the last minute, your ideas are half-baked. And your professor will know it.
5.________ . If you put things off at the last minute, you might find that you haven’t budgeted enough minutes to finish the necessary tasks. It’s the easiest thing in the world to miscalculate how long it will take to do all the work especially when new issues arise ------ like illness, family problems, computer breakdowns, trouble at work, and all the other things ------- as you are thinking through your paper argument or preparing yourself for the coming test. If you keep delaying, you don’t allow yourself time for those various life events that have an adverse(不利的) effect on your ability to complete your assignment.
“A child in the street is a child that has been exposed(暴露)to a lot of bad things. And this child has no love at all. This child has no respect(尊重)for himself or herself. He sees everybody as an enemy, and he can’t trust anyone.”
Who is Moses Zulu talking about? Are there even people who live like that? Sadly, in truth, there are. They happen to be the Zambian children that Moses Zulu helps to improve their lives. Zulu does his best to give many children the hope to live even though they might have AIDS. Without his continuous work through his organization called Children’s Town, many Zambian children would have been forced to survive(生存)in an African city by getting a job as a street vendor(街头小贩), or hurting other people.
In 1990, Moses Zulu founded Children’s Town in Zambia, where one million children have no parents, largely because of AIDS. Children’s Town teaches children the basic life skills needed for their future. Each child goes through a five-year training program where they’re taught responsibility(责任), values, and self-care. Zulu’s Children’s Town provides hope for less fortunate children.
As we all know, a hero is any person who is respected for their qualities and achievements. There are not many people who are willing to help others in need. Zulu’s contribution to today’s modern society teaches us to lend a helping hand to others who are not as lucky as we are. He teaches us to make a difference in the world by helping others.
And from now on, if ever you throw away your banana just because it looks bad, well, remember that a group of people suffering from AIDS, homelessness, or other causes, would fight each other just to get their hands on a single bad banana.
68. 1. Which of the following CANNOT describe Moses Zulu according to the passage?
A. Devoted B. Easy-going
C. Determined D. Kind-hearted
69. 2.In Children’s Town, children will learn ______.
A. how to fight against AIDS
B. how to get a job as a street vendor
C. how to survive by themselves
D. how to avoid fighting in the street
70. 3.In the opinion of the author, he considers Moses Zulu ______.
A. a teacher B. a doctor C. a hero D. a fighter
71. 4. In the last paragraph, the author advises us to ______.
A. plant more bananas B. make use of bad food
C. invent medicine for AIDS D. help poor people