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[主观题]

While Einstein's early______are well-established, it cannot be concluded that he was any l

ess______as a young physicist than the gifted and obsessive theoretician he became later in life.

A．failures… erudite

B．accolades … curmudgeonly

C．foibles… mannerly

D．triumphs… brilliant

E．investigations … passionate

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发布时间：2020-07-27

更多“While Einstein's early______are well-established, it cannot be concluded that he was any l”相关的问题

第1题

Why does the professor mention driving a car while throwing a rock？A．To discuss the effect

Why does the professor mention driving a car while throwing a rock？

A．To discuss the effects of Einstein's theories on physics.

B．To explain the differences between two frames of reference.

C．To show that laws of motion affect everyday life.

D．To argue that frames of reference exist.

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第2题

"A MOMENT'S INATTENTION CAUSES ACCIDENT" is a self-defeating warning because ______.A．it i

"A MOMENT'S INATTENTION CAUSES ACCIDENT" is a self-defeating warning because ______.

A．it is not true

B．it will distract the driver's attention

C．it is too difficult to understand

D．it is too long to be read while driving a ear

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第3题

Any physical theory is always provisional, in the sense that it is only a hypothesis: you

can never prove in. No matter how many times the results of experiments agree with some theory, you can never be sure that the next time the result will not contradict the theory. On the other hand, you can disprove a theory by finding even a single observation that disagrees with the predictions of the theory. As philosopher of science Karl Popper has emphasized, a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions the theory survives, and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory. At least that is what is supposed to happen, but you can always question the competence of the per son who carried out the observation.

In practice, what often happens is that a new theory is devised that is really an extension of the previous theory. For example, very accurate observations of the planet Mercury revealed a small difference between its motion and the predictions of Newton's theory of gravity. Einstein' s general theory of relativity predicted a slightly different motion from Newton's theory. The fact that Einstein's predictions matched what was seen, while New ton's did not, was one of the crucial confirmations of the new theory. However, we still use Newton's theory for all practical purposes because the difference between its predictions and those of general relativity is very small in the situations that we normally deal with. (New ton's theory also has the great advantage that it is much simpler to work with than Einstein' s!)

A good title for this passage is ______.

A．The History of Physical Science

B．Karl Popper's Physical Theory

C．The Philosophy of Science

D．Einstein's Theory of Science

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第4题

听力原文：Everybody loves the swimming pool. But how clean is the water in the average back

yard or public pool？ If you trust chlorine to take care of germs, you're in for a surprise. Chlorine and other disinfectants do indeed help to clean the water, but some germs can survive in even the best-kept pool. For example, cryptosporidium may live in pool water for several days. Crypto causes a diarrheal illness and may rinse off the bodies of infected people or diapered children into the pool. If you swallow infected pool water, you may become sick. Other germs may live for a few minutes or a few hours in a chlorinated pool: Giardia, Shigella, and E. Coli may cause diarrheal illnesses. Pseudomonas Aeruginosa may cause an ear infection called swimmer's ear and also a skin infection called "hot tub rash", that is usually associated with very warm pools and spas. While keeping the correct chlorine and PH levels will minimize water-borne illness, prevention is also a good idea.Keep diapered children in the water for only brief periods and keep sick people out of the water altogether. And, don't ever swallow pool water.

According to the passage, how long may Cryptosporidium live in pool water？

A．Several seconds.

B．Several minutes.

C．Several hours.

D．Several days.

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第5题

According to the article, what causes ear discomfort while flying？A．A change in air pressu

According to the article, what causes ear discomfort while flying？

A．A change in air pressure.

B．A change in drinks.

C．A change in plane speed.

D．A change in temperature.

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第6题

回答题：Looking to help the environment？ Consider the following simple ideas.Turn off elec

回答题：

Looking to help the environment？ Consider the following simple ideas.

Turn off electrical devices when they"re not being used.

Turning off， rather than leaving on stand-by， things like your TV and computer will save huge amounts of energy. With this， we can all help reduce the amount of carbon dioxide emitted into the earth"s atmosphere， thereby reducing pollution and global warming.

Share your ear.

Rather than traveling to work alone， why not arrange ear-sharing with one or more of your，friends or colleagues？ To give you an example， if you drive a fashionable ear， you will use more energy in a year than you would leaving your fridge open for seven years， or your TV on for thirty-two years ! Imagine the savings if you shared your ear with 2，3 or even 4 other people !

Refuse junk mail.

While we all complain about how much junk mail we get， we very rarely do anything about it. The mail continues to go straight from our letter-boxes into the garbage bin——with 99% of it not even opened. What can you do about this？ There are various websites where you can register to receive no junk mail. As well as saving time， you"ll also be doing a lot for the environment. Each year，100 million trees are used to produce junk mail.250，000 homes could be heated with one day"s supply of junk mail.

There are many other everyday changes you can make to help the environment. They will cost you nothing， and many will actually save you money! Why not give it a try？ We can all help，if we really want to.

By turning off a TV or computer that‘s not being used，you will save a lot of energy. 查看材料

A.Right

B.Wrong

C.Not mentioned

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第7题

Einstein' s theory is easily understandable after it was formed at that time.A．YB．NC．NG

Einstein' s theory is easily understandable after it was formed at that time.

A．Y

B．N

C．NG

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第8题

第二节短文理解1阅读下面短文，从[A]（Right)、[B]（Wrong)、[C]（Doesn't Say)三个判断中选择一个正

第二节短文理解1

阅读下面短文，从[A](Right)、[B](Wrong)、[C](Doesn't Say)三个判断中选择一个正确选项。

I went shopping by myself one day. When I was going to check out, I found I had forgotten to bring my credit card with me. The cashier put aside my order while I drove home to get it.

My husband was home, so be came along to help. As we pulled into the parking lot, I saw a man sitting in his car. My husband and I ran into the store, paid for what we bought and came out:

As we walked to our ear, the man came over. "How did you do that？" he said. "You were in the store for only ten minutes. I've been waiting for my wife for an hour !"

I thought that a little white lie couldn't hurt(伤害) the woman shopping by herself, so I said to my husband, "Ten minutes. That's a record (记录) !" Then I told the man," It's amazing (令人吃惊的) how much faster the shopping gets done when the husband helps."

The writer's home was far from the store.

A．Right

B．Wrong

C．Doesn't Say

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第9题

In Einstein's opinion, his theory of relativity could also ______ our daily life.

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第10题

Einstein's theory of relativity is so abstruse that very few people can appreciate it.A．un

Einstein's theory of relativity is so abstruse that very few people can appreciate it.

A．understand