艾薩克·阿西莫夫（Isaac Asimov）是美國(guó)科學(xué)家兼作家，1920年1月2日出生于俄羅斯， 1992年4月6日于紐約去世。1948年他獲得了化學(xué)博士學(xué)位。第二年在波士頓大學(xué)的醫(yī)學(xué)院任生化教師。1958年他放棄了教學(xué)工作成為專職作家。一生中，他寫過大約480本書，包括怪誕小說(shuō)、科學(xué)和歷史方面的書，甚至還寫過有關(guān)《圣經(jīng)》和莎士比亞的書。但使他最負(fù)盛名的作品是他的科幻小說(shuō), 如《基地》三部曲，《我，機(jī)器人》等。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年山東菏澤市高三第一次模擬考試英語(yǔ)試卷（解析版） 題型：閱讀理解

Can eating a chocolate bar every day really prevent age-related memory loss? No. But a new research shows that large amounts of flavones, substances found in cocoa, tea and some kinds of vegetables, may improve age-related memory failure.

Dr. Scott Small is a professor of neurology at Columbia University in new York City He is the lead writer of a research paper describing the effects of cocoa flavones on brain activity His study involved 37 volunteers aged between 50 and 69. Researchers gave them a high-level flavones drink made from cocoa beans or a low-level flavones drink. For a period of three months, some subjects got 900 milligrams of flavones a day. The others got 10 milligrams of flavones each day. Brain imaging and memory tests were given to each study subject before and after the study Dr. Small says that the subjects who had the high-level flavones drink showed much improvement on memorytests.

The researchers warn that more work is needed to be done because this study was performed only on a small group. Dr. Joann Manson is the lead researcher of a four .year study involving 18,000 adults. This study will use flavones capsules(膠囊) The study subjects will be divided into two groups and will take two pills per day. The capsules used will all Look the same. But one group's capsules will contain flavones, while the other group will take capsules made of an inactive substance, or placebo

Dr. Manson says it's not necessary for people to start eating more chocolate, because 3 person would have to eat a huge amount of chocolate to get the same level of flavones given to the Lest subjects. He adds many manufacturers have planned to remove the flavones from their chocolate products. Similarity, Dr. says a cocoa-based flavones extract（提�。﹎ay be developed in the future But he says that more studies are needed to see how much flavones is good for our health

1.What was done to the subjects alter Dr. Small's study?

A. They were asked to take a high-level flavones drink

B. They were given capsules containing flavones

C. They were given brain imaging and memory tests

D. They were asked to take two pills of flavones capsules per day

2.What's the similarity of the 2 experiments?

A. Both use high-level flavones capsules

B. The number of the subjects is the same

C. Drinks and placebos are used in both experiments

D. The subjects are divided into two groups in both experiments

3.Why will Dr. Manson carry out the four-year study?

A. To prove the first experiment is wrong

B. To carry out the experiment further

C. To test how much flavones can improve our memory.

D. To show eating chocolate is better to improve memory.

4.What can we learn from the last paragraph?

A. It's not necessary for us to eat chocolate

B. The more we eat flavones, the better our health will be

C. In the future we can get flavones without eating chocolate

D. It's easy for people to get the same level of flavones given to the test subjects

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年浙江瑞安八校高二下期中聯(lián)考英語(yǔ)試卷（解析版） 題型：閱讀理解

Waste can be seen everywhere in the school. Some students ask for more food than they can eat and others often forget to turn off the lights when they leave the classroom. They say they can afford these things. But I don’t agree with them.

Waste can bring a lot of problems. Although China is rich in some resources(資源), we are short of others, for example, fresh water. It is reported that we will have no coal or oil to use in 100 years. So if we go on wasting our resources, what can we use in the future and where can we move? Think about it. I think we should say no to the students who waste things every day. Everybody should stop wasting as soon as possible.

In our everyday life, we can do many things to prevent waste from happening, for example, turn off the water taps when we finish washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by little, everything will be changed. Waste can be stopped one day, if we do our best.

1.Which is not mentioned in this passage?

A. Fresh water. B. Forest. C. Oil. D. Coal.

2.What may happen in 100 years?

A. We may still have enough oil.

B. We may still have enough coal.

C. We may have a little oil.

D. We may have no coal or oil to use.

3.Which of the following is right?

A. Waste brings problems.

B. Waste can bring no problem.

C. China is rich in fresh water.

D. Students never waste things.

4.Which is the best title of this passage?

A. Stop Wasting

B. School life

C. Waste in the School

D. Rich Resources in China

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年新疆兵團(tuán)農(nóng)二師華山中學(xué)高二下學(xué)前考英語(yǔ)試卷（解析版） 題型：信息匹配

Cheating is when a person misleads, deceives or acts dishonestly on purpose. 1. If a basketball team is for kids under 8,it's cheating for a 9-year-old play on the team. At school, in addition to cheating on a test, a kid might cheat by stealing someone else's idea for a science project. 2. This kind of cheating is called plagiarizing (抄襲).

3. Jeff is doing it by sneaking answers to a test. And it's also cheating to break the rules of a game or contest or to pretend something is yours when it isn't. When people cheat, it's not fair to other people.

It's tempting(誘惑人的) to cheat because it makes difficult things seem easy, like getting all the right answer on the rest. 4. And it won't help on the next test-unless the person cheats again.

5. They want to get good grades but hate hard work. Other kids might feel like they can't pass the test without cheating. Even though there seems to be a "good reason" for cheating, cheating isn't a good idea.

A. Some kids cheat because they're lazy.

B. Cheating can happen in a lot of different ways.

C. But it doesn't solve the problem of not knowing the material.

D. Some kids cheat once and feel so bad that they never do it again.

E. For kids, cheating may happen at school, at home, or while playing a sport.

F. There are plenty of reasons why a kid shouldn't cheat, but some kids have already cheated.

G. Kids may also cheat by copying a book report off the Internet and handing it in as it's his or her original work.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年山西原平第一中學(xué)高一上期末英語(yǔ)試卷（解析版） 題型：信息匹配

根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出填入空白處的最佳選項(xiàng)，有兩項(xiàng)是多余的。

If you’d like to become a dancer, spend some time choosing a dance style. Each type of dance is made up of techniques which need to be practiced and mastered. 1.

Once you have decided to become a dancer, it is important to carefully choose a dance class. 2.

It is easy to form bad habits in the beginning, and extremely hard to correct them. So choosing a good teacher will help you a lot from the beginning.

3. Special dance shoes will be required for most dance styles, including ballet slippers for ballet and tap shoes for tap. Your dance teacher will probably have a preference for clothing, such as a black leotard(緊身衣) with pink tights for a ballet dancer, or black dance pants(短褲) for a jazz dancer.

If you are enrolled in your very first dance class, tour the dance studio before your first day. 4.

The floors of dance studios should be soft, as dancing on hard floors may cause injuries. The class structures will vary for the different dance styles.

Get connected with another dancer, check out the dance forum to exchange steps and moves, ask for advice, and make new friends!

Also, sign up for our free weekly e-mail newsletter to learn more about the dancing world and to stay informed of what’s new about dance. 5.

A．Most dance studios are large and airy with at least one full wall of mirrors.

B．Then comes the problem-what shoes to wear when dancing.

C．And your choice of a dance teacher is very important too.

D．Have fun on the journey to becoming a dancer!

E．Your goal as a dancer will help you decide which style of dance is right for you.

F．What to wear will be determined by the type of dancer you choose to become.

G．Learn the names of basic ballet steps and much more.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年山西大同市高二下3月月考英語(yǔ)試卷（解析版） 題型：閱讀理解

Many years ago the idea of disabled people doing sport was never heard of. But when the yearly games for the disabled were started at Stoke Mandeville, England in 1948 by Sir Ludwig Guttmann, the situation began to change.

Sir Ludwig Guttmann, who had been driven to England in 1939 from Nazi Germany, had been asked by the British government to set up an injuries centre at Stoke Mandeville Hospital near London. His ideas about treating injuries included sport for the disabled.

In the first games just two teams of injured soldiers took part. The next year 1949, five teams took part. From those beginnings, things have developed fast. Teams now come from abroad to Stoke Mandeville every year. In 1960 the first Olympics for the disabled were held in Rome, in the same place as the normal Olympic Games. Now, every four years the Olympic Games for the disabled are held, if possible, in the same place as the normal Olympic Games, although they are organized separately. In other years Games for the disabled are still held at Stoke Mandeville. In the 1984 wheelchair Olympic Games, 1064 wheelchair athletes from about 40 countries took part. Unfortunately, they were held at Stoke Mandeville and not in Los Angeles, along with the other Olympics.

The Games have been a great success in helping the progress of international friendship and understanding, and in proving that being disabled does not mean you can’t enjoy sport. One small source of disappointment for those who organize and take part in the games, however, has been the unwillingness of the International Olympic Committee to include disabled events at the Olympic Games for the able bodied. Perhaps a few more years is still needed to persuade those fortunate enough not to be disabled that their disabled fellow athletes should be included.

1. The first games for the disabled were held after Sir Ludwig Guttmann arrived in England.

A.40 years

B.21 years

C.10 years

D.9 years

2.This text tells us that Sir Ludwig Guttmann .

A. was an early organizer of the games for the able-bodied

B. was welcomed by the British government

C. was an injured soldier

D. was from England

3.From the passage, we may know that the writer is .

A. one of the organizers of the games for the disabled

B. a disabled person who once took part in the games

C. against holding the games for the disabled

D. in favour of holding the games for the disabled

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年山西大同市高二下3月月考英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

She felt about wearing the improper garment at the party.

A.embarrassing B.embarrass

C.to embarrass D.embarrassed

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年山西大同市高二下3月月考英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

The newly built washingroom in the railway station is to the disabled passengers.

A.perfect B.accessible

C.remarkable D.potential

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2014-2015學(xué)年山東滕州第一中學(xué)高二上期末英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

Bill thought rain was out of question, so he didn’t bring umbrella．

A．the; an B．/; an

C．a(chǎn); the D．the; /

查看答案和解析>>

同步練習(xí)冊(cè)答案