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高二年级英语暑假作业练习题及答案

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2016-08-06

D

Could your cellphone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and wi-fi could be responsible for a range of illnesses, from rashes to brain tumors.

Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there’s a greater than 95 percent chance that power lines can cause childhood leukemia (白血病). Also there’s a greater than 90 percent chance that cellphones can cause brain tumors. “It’s apparent now that there’s a real risk,” said Carpenter.

But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology(流行病学) at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don’t support warning labels for cellphones, ” said Linet. “We don’t have the evidence that there’s much danger. ”

Studies so far suggest a weak connection between EMFs (电磁场) and illness— so weak that it might not exist at all. A multinational investigation of cellphones and brain cancer, in 13 countries outside the US, has been underway for several years. It’s funded in part by the European Union, in part by a cellphone industry group. The final report should come out later this year, but data so far don’t suggest a strong link between cellphone use and cancer risk.

12.From the passage we can learn that some people are worried because _______.

A. they have evidence that the use of cellphones can lead to cancer

B. they make a fuss over cellphone use

C. some experts have given a warning

D. cellphones are responsible for brain tumors

13.By saying “I don’t support warning labels for cellphones,” Dr Martha Linet has the idea that _______.

A. the worrying is unnecessary

B. cancer-warning labels should be on cellphones

C. there is a link between cellphones and cancer

D. cellphones have nothing to do with cancer

14.Which of the following best describes the attitude of the author towards the debate?

A. Optimistic.  B. Objective.  C. Opposite.   D. Casual.

15.What’s the best title of the passage?

A. Cellphones: is there a cancer link?

B. There is a link between cellphone and cancer.

C. A research on the cellphone.

D. The cellphone and radiation epidemiology

第二节(共5小题;每小题3分,满分15 分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Four ways to Improve Your Memory

Have you ever imagined the benefits that a good memory can bring to you? Being able to  remember important pieces of information can give you a powerful advantage in your life.___16__. Here are four ways to improve your memory:

Make the most of your imagination. ___17___For example, to remember where you have left your car keys, pretend to hold a camera to your eyes, focus on the scene, and click the image into your memory when you are leaving. This technique works with almost everything you want to remember, as the roll of films in your mind is endless.

Try to practice. There are lots of ways to do this: try to remember which day of the week your last birthday was.__18___Try to remember all the ping-pong finalists and the winner. If you can try to remember the scores as well, it would be even better to practice. It won’t be long before your daily practice pays off, making your mind sharper and more adaptable.

Get physical exercise. Physical exercise not only improves memory but also helps you think faster. A combination of mental and physical activity can protect your memory. It is known that the brain’s processing speed gradually slows as you age.____19____

__20______Mental exercises are as important as physical ones to keep one’s brain power. Take up word games like crossword puzzles. Memorize favorite poems and read challenging books or articles that encourage you to expand your interests. Any activity that requires you to think and concentrate will challenge your brain. And your brain will develop better on the challenge.

A. Exercise your brain.

B. Play more games.

C. Fortunately, staying physically fit can avoid some of the effects of age on the brain.

D. In fact, the ability to remember things is necessary to your success.

E. Then extend this to the birthdays of all your family members.

F. An easy way to remember something is to “take a picture”.

G. If you are right-handed , try to brush your teeth with your left hand.

第二部分:英语知识运用(共两节,满分55分)

第一节完形填空(共20小题;每小题2分,满分40分)

Long long ago, there was a small village. This village had a __21__ tradition. At the beginning of every year, any boy who had reached the age of majority (成年) was given land and money to build a home. The boy had to __22__ his home before winter. If his home failed to endure the cold weather in winter, the villagers could not __23__ him in any way.

One __24__, Paul and Marc reached their majority. They __25__ their land and money and decided to search nearby villages for ideas on building their homes. In each village, they found the nicest __26__ and talked to the owners. Each owner gladly offered __27__.

After Marc saw several homes, he __28__ th e best ideas and went back to his ow n land. Paul, __29__, continued collecting more ideas. Soon he had so many great ideas that he began to __30__ some of them. But he always believed he could find even better ideas in the next village.

Marc began building his home. He had several __31__starts, but his home gradually rose from his land. By fall, Marc had finished his home. It wasn't perfect, but it was strong and he could __32__ it later. Paul enjoyed all the beautiful homes and __33__ with home owners. The first snow came and Paul, realizing he was running out of time, __34__back to his land. He built the best home he could in the time he had, but it was __35__. The first winter storm destroyed his home and he was frozen to __36__. The villagers mourned for him.

Marc _37__ the winter. Each year, Marc searched for other good ideas he could use to make his own home look better. He became a leader in the village, _38__ a family, and lived a happy, content life.

We all build and improve our own mental homes. It's __39__ and fun for us to search for ideas from other mental home owners, but we only improve our own mental home if we actually __40__ the best ideas.

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