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[主观题]

Because we can feel that things are heavy, we think of weight as being a fixed quality in

an object, but it is not really fixed at all. If you could take a one pound packet of butter 4,000 miles out from the earth, it would weigh only a quarter of a pound.

Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space? The reason is this: All objects have a natural attraction for all other objects; this is called gravitational attraction, but this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4,000 miles from the center (in other words the radius[半径] of the earth is 4,000 miles). When we took the butter 4,000 miles out, it was 8,000 miles from the center, which is twice the distance.

If you double the distance between two objects, their gravitational attraction decreases (减少) two times two. If you treble (成三倍) the distance, it gets nine times weaker (three times three). If you take it four times as far away, it gets sixteen times weaker (four times four ) and so on.

The best title for this passage is______.

A.The Earth Weight

B.Weight in Space

C.Changing Weight on the Earth

D.Weight on and off the Earth

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更多“Because we can feel that things are heavy, we think of weight as being a fixed quality in”相关的问题

第1题

(英语类学生必做)Sleep is important to us because it helps restore organs and tissues in ou

(英语类学生必做)

Sleep is important to us because it helps restore organs and tissues in our body. But how much sleep do we actually need?

For most of us, eight hours seems to be about the right amount. Yet we know that there are many people who get 【61】 perfectly with less sleep, and some who may need 【62】 A great deal depends on the 【63】 we live. But a good general rule 【64】 is to sleep as long as we have to in order to feel happy and be able to work 【65】 our best when we awaken.

There are actually different 【66】 of sleep. There is a deep sleep and a shallow sleep. In a shallow sleep our body does not get the same kind of rest it gets in a 【67】 sleep, 【68】 after eight hours of a shallow sleep we may still feel tired. But a short, deep sleep can be very 【69】 Alexander—the Great Emperor was able to get a deep sleep 【70】 he needed it. Once, during the night before an important battle, he remained 【71】 longer than anyone else. 【72】 he wrapped himself in a cloak and 【73】 down on the earth. He slept so 【74】 that his generals had to wake him three times for him to give the 【75】 to attack!

Normally when we go to sleep, our " sleep center" blocks off nerves so that 【76】 our brain and body go to sleep. 【77】 prevents us from wanting to do anything, and the other 【78】 our internal organs and limbs go to sleep. 【79】 sometimes only one goes to sleep and the other does not. A very tired soldier can sometimes 【80】 asleep (brain sleep) and keep on marching, because his body is not asleep.

(86)

A.across

B.away

C.along

D.over

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第2题

When we talk about intelligence we do not mean the ability to get good scores on certain
kinds of tests or even the ability to do well in school. By intelligence we mean a way of living and behaving,especially in a new situation. If we want to test intelligence,we need to find out how a person acts instead of how much he knows to do.For example,when in a new situation,an intelligent person thinks about the situation,not about himself or what might happen to him. He tries to find out all he can do,and then he acts immediately and tries to do something about it. He probably isn’t sure how it all works out,but at least he tries. And if he cannot make things work out right,he doesn’t feel ashamed that he failed,he just tries to learn from his mistakes. An intelligent person,even if he is very young,has a special outlook in life,a special feeling about life,and a special way of how he fits into it.If you look at children,you’ll see a great difference between what we call "bright" children and "not bright" children. They are actually two different kinds of people,not just the same kind with different amounts of intelligence. For example,the bright child really wants to find out about life—he tries to get in touch with everything around him. But the unintelligent child keeps more to himself and his own dream world; he seems to have a wall between him and life in general.

1.According to this passage,intelligence is the ability to ().

A、work by oneself do well in any

B、situation

C、know what is right and wrong

D、adapt oneself to a new situation

2.Why does an unintelligent child seem to have a wall between him and life in general?()

A、Because he can hardly see the outside world.

B、Because life is far away from him.

C、Because he knows nothing about life in general.

D、Because he has little interest in things around himself.

3.In a new situation,an intelligent person ().

A、knows more about what might happen to him

B、is well-prepared for his action

C、pays greater attention to the situation

D、completely ignores himself

4.If an intelligent person failed,he would ().

A、feel ashamed about the failure

B、learn from his experiences

C、find out what he can’t do

D、make sure what’s wrong with his outlook in life

5.An intelligent child ().

A、learns more about himself

B、shows interest in things around him

C、studies everything that may be interesting

D、looks down upon unintelligent children

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第3题

Why are so many people unhappy in their jobs? Ther...

Why are so many people unhappy in their jobs? There are two primary reasons. First,some people are convinced that earning a living is wasting time? that they could spend enjoying themselves or uncovering their talents. If this is the case with your, recall you last long vacation. Was it two weeks of complete enjoyment? More likely it was a week and a half of fun in the sun,with another half of a week of bore. I can&39;t wait to get back to work. If you didn&39;t feel such vacation blues,then imagine taking a leave of absence. You could use it to work on a novel, enroll in classes or just sit around watching TV. At the end of three months, in all likelihood,yourself-esteem would be at an all-time low. While all work and no play is not good, all playand no work is disastrous. Wc need to feel we are accomplishing something. We also need some form. of order in our lives. The second and perhaps more prevalent reason for people not to like their work is that they feel trapped. Once you have been at a company for five years and have a spouse,a mortgage and a child, you often feel you have very little choice about jummping ship if things aren’t turning out as you’d planned. A steady paycheck can be the biggest manacle (束缚)of all. People resent having to do something because they have no other choices. If you find yourself resenting your job because you cant afford to quit, it mnay be timeco prepare what one career counselor humorously calls a cyanide(氰化物) capsule. He re-calls spy movies in/which the secret agent has. such a capsule hidden somewhere on His body. If he&39;s captured and tortured unbearably, he has an option. And having an option gives him the strength to hold on a little longer in tbe hope that the situation/ may change. Rather than cyanide. your option takes the form. of an up-to-date resume. You might also take a weekly glance through the help-wanted section, and make some visits to industry functions where low-key net-working can take place. You are not giving up on your current job. Rather , you are providing yourself with an option. If things get unbearable atwork, you could jump ship. Being in this position can do wonders for your attiude. It allows you to enjoy your work since, in reality, you are there only because you want to be. At the core of adopting a positive attitude to your workplace is above all assuming responsibility for your own situation. Most people feel controlled by their environment,but they really aren&39;t.

They have to learn to manage adaptation environment so they can get from it what they need. The second main reason for their unhappiness is that____.

A.they have been working in a company’for too long

B.they are not permitted to change a job

C.they have no other way out than keep working

D.they have to work on to pay off their debts

The example about your last vacation proves that"A.all play and no work is disastrous

B.all work and no play is not good

C.avacation of two weeks is not enough

D.a vacation of two weeks is more than enough

With an up-to-date resume ready as an option, you may feel better at your job Because___.A.you are to do wonders in your work

B.it is up to you to choose between two alternatives

C.you have made a decision on your own

D.it seems to be the only positive attitude

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第4题

The eight airlines of the One world alliance (联盟) have joined forces to give world trave

The eight airlines of the One world alliance (联盟) have joined forces to give world travelers a simple way to plan and book a round-the-world journey. It's called the Oneworld Explorer program.

Oneworld Explorer is the perfect solution for a once-in-a-lifetime holiday or an extended business trip. It's a great way for you to explore the four comers of the earth in the safe hands of the eight Oneworld airlines.

You can have hundreds of destinations to choose from, because the Oneworld network covers the globe. And, as you travel around the world, you'll have the support of 260,000 people from all our airlines, who are devoted to the success of your journey, helping you make smooth transfers and offering support all along the way.

The Oneworld goal is to make global travel easier and more rewarding for every one of our travelers. We try our best to make you feel at home, no matter how far from home your journey may take you.

We can offer travelers benefits on a scale beyond the reach of our individual networks. You'll find more people and more information to guide you at every stage of your trip, making transfers smoother and global travel less of a challenge.

Oneworld in the passage refers to______.

A.a travel agency

B.a union of airlines

C.a series of tourists attractions

D.the title of a flight program

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第5题

Next time you feel the flu coming on, think twice before reaching for painkillers—they cou
ld do more【C1】______than good. With the flu season【C2】______way across Europe and North America, millions will be taking flu【C3】______, which commonly include painkillers. The general【C4】______advice in the UK and the US is to take painkillers. But although painkillers can make you feel better they also lower fever, which can make the virus【C5】______. The first analysis of the effect of this on the【C6】______shows that painkillers taken at current levels to【C7】______fevers could cause 2, 000 flu deaths each year in the US alone. Fever is thought to be a【C8】______against viruses, because many viruses find it hard to【C9】______above our normal 37 °C. Some studies have shown that lowering fever may【C10】______virus-related infections and increase the amount of virus we can【C11】______on to others. To find out what【C12】______this might have on a flu epidemic, David Earn and his colleagues【C13】______to a 1982 study which showed that ferrets, a【C14】______animal model for human flu produced more【C15】______flu virus if their fevers were lowered with painkillers. Earns team used these findings to estimate how much more virus people with【C16】______flu might produce if their fevers were【C17】______. With the help of a mathematical model, Earns team【C18】______their estimates to the number of people a year in the US who get flu,【C19】______fever and take the drugs. They found that painkillers as used in the US could be increasing the【C20】______of ordinary winter flu by up to 5 per cent.

【C1】

A.hurt

B.pain

C.harm

D.work

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第6题

PAX: My ears feel funny. I can’t hear properly. CA: Don’t worry. It’s because of the change in air .()

A.press

B.pressing

C.pressure

D.expression

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第7题

We can conclude from this passage that camels ______. A. feel at home in the desert B

We can conclude from this passage that camels ______.

A. feel at home in the desert

B. like to carry heavy loads

C. look like ships from a distance

D. will always be useful

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第8题

Culture shock is an occupational disease (职业病) for people who have been suddenly transp

Culture shock is an occupational disease (职业病) for people who have been suddenly transplanted abroad.

Culture shock is caused by the anxiety that results from losing all familiar signs and symbols of social intercourse. Those signs are as following: How to shake hands and what to say when meeting people, when and how to give tips, how to make purchases, when to accept and refuse invitations, when to take statements seriously and when not. These signs, which may be words, gestures, facial expressions, or customs, are acquired by all of us in the course of growing up and as much a part of our culture as the language we speak or the beliefs we accept. All of us depend on hundreds of these signs for the peace of our mind and day-to-day efficiency, but we do not carry most at the level of conscious awareness.

Now when an individual enters a strange culture, all or most of these familiar signs are removed. No matter how broadminded or full of good will you may be, a series of supports have been knocked from under you, followed by a feeling of frustration. When suffering from culture shock people first reject the environment which causes discomfort. The ways of the host country are bad Because they make us feel bad. When foreigners on a strange land get together to complain about the host country and its people, you can be sure that they are suffering from culture shock.

According to the passage, culture shock is______.

A.an occupational disease of foreign people

B.may lead to very serious symptoms

C.actually not a disease

D.incurable

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第9题

Part B [A]Analyzingyourowntaste [B]Beingcautiouswhenexperimenting [C]Findingamodelt

Part B [A] Analyzing your own taste

[B] Being cautious when experimenting

[C] Finding a model to follow

[D] Getting the final look absolutely right

[E] Learning to be realistic

[F] Making regular conscious choices

When we meet people for the first time, we often make decisions about them based entirely on how they look.

And, of course it’s something that works both ways, for we too are being judged on our appearance.

When we look good, we feel good, which in turn leads to a more confident and self-assured manner. People then pick up on this confidence and respond positively towards us,

Undoubtedly, it's what's inside that's important, but sometimes

we can send out the wrong signals simply by wearing inappropriate clothing or not spending enough time thinking about how others see us.

41___________

For example, people often make the mistake of trying to look like someone else they’ve seen in a magazine, but this is usually a disaster as we all have our own characteristics.

Stand in front of a fulllength mirror and be honest with yourself about what you see.

There is no need to dwell on your faults—we all have good points and bad points—but think instead about the best way to emphasize the good ones.

42___________

When selecting your clothes each day, think about who you’re likely to meet, where you’re going to be spending most of your time and what tasks you are likely to perform. Clearly,

some outfits will be more appropriate to different sorts of activity

and this will dictate your choice to an extent. However, there’s no need to abandon your individual taste completely. After all,

if you dress to please somebody else’s idea of what looks good, you may end up feeling uncomfortable and not quite yourself.

43___________

But to know your own mind, you have to get to know yourself.

What do you truly feel good in? There are probably a few favourite items that you wear a lot—most people wear 20 per cent of their wardrobe 80 per cent of the time.

Look at these clothes and ask yourself what they have in common.

Are they neat and tidy, loose and flowing? Then look at the things hanging in your wardrobe that you don’t wear and ask yourself why.

Go through a few magazines and catalogues and mark the things that catch your eye. Is there a common theme?

44___________

Some colors bring your natural colouring to life and others can give us a washed-out appearance. Try out new colours by all means,

but remember that dressing in bright colours when you really like subtle neutral tones,

or vice versa, will make you feel selfconscious and uncomfortable.

You know deep down where your own taste boundaries lie. And although it’s good to challenge those sometimes with new combinations or shades,

take care not to go too far all at once.

45___________

So, you’ve chosen an outfit that matches your style,

your personality, your shape and your colouring. But does it fit? If something is too tight or too loose,

you won’t achieve the desired effect, and no matter what other qualities it has, it won’t improve your appearance or your confidence. Sometimes,

we buy things without thinking. Some people who dislike shopping grab the first thing they see,

or prefer to use mail-order or the Internet. In all cases, if it doesn’t fit perfectly, don’t buy it, because the finer details are just as important as the overall style.

Reappraising your image isn’t selfish because everyone who comes into contact with you will benefit. You’ll look better and you’ll feel a better person all round. And if in doubt, you only need to read Professor Albert Mehrabian’s book Silent Messages to remind yourself how important outward appearances are.

His research showed that the impact we make on each other depend 55 per cent on how we look and behave,

38 per cent on how we speak and only 7 per cent on what we actually say.

So, whatever stage you are at in your life, whatever role you play, isn’t it time you made the most of yourself?

第41题:

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第10题

From the passage we can conclude that ______A.Amy has never recovered from the shockB.The

From the passage we can conclude that ______

A.Amy has never recovered from the shock

B.The accident didn't change Amy in the least

C.As her head was damaged, Amy didn't feel any guilt

D.Amy has lived quite a normal life, but she can never forget Jane

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第11题

It is a great truth because once we truly understand and accept it. Then life is no lo
nger difficult. Most people do not fully see this truth. Instead they complain about their problems and difficulties as if life should be easy. It seems to them that difficulties represent (代表) a special kind of suffering especially forced upon them or else upon their families, their class, or even their nation.

What makes life difficult is the process of facing and solving problems and it is a painful one. Problems, depending on their nature, cause us sadness or, loneliness or regret or anger of fear. These are uncomfortable feelings, often as painful as any kind of physical pain. And since life causes an endless series of problems, life is always difficult and is full of pain as well as joy.Yet, it is in this whole process of solving problems that life has its meaning. Problems are the serious test that tells us success from failure. When we desire to encourage the growth of human spirit, we encourage the human ability to solve problems, just as in school we set problems for our children to solve. It is through the pain of meeting and working out problems that we learn. As Benjamin Franklin said, "Those things that hurt, instruct." It is for this reason that wise people learn not to fear but to welcome the pain of problems.

1.The main idea of paragraph three is that ().

A、most people feel life is easy

B、the writer feels life is easy

C、the writer likes to complain about his problems

D、Problem solving is part of life

2.The saying from Benjamin Franklin "Those things that hurt, instruct" suggest that ().

A、we do not learn from experience

B、we do not learn when we are pain

C、pain teaches us important lessons

D、pain cannot be avoid

3.According to the passage, we give school children difficult problems to solve in order to ().

A、encourage them to learn

B、teach them to fear the pain of solving the problem

C、help them learn to deal with pain

D、teach them how to respect from problems

4.From the passage, it can be inferred that ().

A、everybody has problems

B、we become stronger by meeting and solving the problems of life

C、life is difficult because our problems bring us pain

D、people like to complain about their problems

5.The writer probably used one short sentence in the first paragraph to ().

A、save space

B、persuade readers

C、make readers laugh

D、get readers'' attention

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