Mr. Black has been teaching English in a middle school he came to China.A. for ever B. ever since C. ever before D. long before 题目和参考答案——青夏教育精英家教网—

题目内容

Mr. Black has been teaching English in a middle school _____ he came to China.

A. for ever B. ever since C. ever before D. long before

【解析】

试题分析：考查连词辨析句意：布朗先生自己来中国一直在中国任教。根据Mr. Black has been teaching English in a middle school可知选B项。

考点：考查连词辨析

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What was your favorite sport during your childhood? Maybe running around the playground or jumping rope for hours would bring you pleasure. At that time you weren’t thinking of health, you were just thinking of entertainment(娱乐). But in this age of high-tech home equipment, the simple joy of jumping rope has been forgotten. I think rediscovering it probably will give you a total-body exercise.

Although considered an excellent form of exercise, jumping rope has never been widely accepted because of two reasons. First, most people consider jumping rope to be an excellent form of cardiovascular (心血管的) exercise, but they also believe that it is simply too difficult. In other words, they don’t think they’ll be able to continue jumping for the near 20 minutes in order to achieve a beneficial physical effect. Second, many people regard it as a little boring and overly repetitive —not as something fun or enjoyable.

As a matter of fact, jumping rope can be great fun as long as you find proper ways to practice it. Instead of doing the usual two-foot bounce(跳) over and over again, players good at rope-jumping often change their pattern every 10 or 20 jumps. A single bounce, a double –bounce, a skip, a knee-up, side swings, as well as a variety of other easy-to-learn free-style rope-jumping .

Nowadays researchers are discovering that jumping rope also prepares the brain for learning. It is an exercise allowing both brain hemispheres（半球）to perform equally to each other . In a word, jumping rope can be a life-long activity requiring little equipment, time and space, yet leading to a much healthier life.

1.One reason that can explain why rope jumping has not spread widely is that_____.

A. it is believed to be boring and repetitive

B. it is too difficult for people to learn to jump

C. it benefits the cardiovascular system

D. it requires little equipment, time and space

2.The first sentence in Paragraph 3 implies that in rope jumping .

A. there is only one proper way to follow

B. the usual way should not be used again

C. the easiest way is always the best one

D. there are different kinds of ways to follow

3.According to the researchers, jumping rope .

A. only prepares the brain for learning

B. is suitable for students only

C. helps both brain hemispheres work together

D. can be dangerous for old people

4.What is the author’s attitude towards rope jumping?

A. He strongly argues against it.

B. He is sitting on the fence of it .

C. He is for it.

D. He knows little about it .

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Adults have many reasons to worry about kids’ Internet use. In chat rooms, for instance, it is easy to lie and kids can get trapped in dangerous situations. In searching for and visiting websites, kids can come across words and pictures that they may not be prepared for. To help prevent that situation, in 2000, the US Congress passed the Children’s Internet Protection Act, which requires schools to block offensive and obscene（淫秽的）websites.

Researches have pointed out how confusing the Internet can be for children, even when they think they know how it works. To find out how much kids know about the technology, Zheng Yan, an educational professor in New York, interviews over 300 students in grades four to eight. Most of the youngest students think the Internet is simply an icon (图标) on the screen. It often isn’t until 10 that kids realize that the Internet is a network of millions of computers. It takes another 2 or 3 years for them to understand that a stranger can see what they’ve posted.

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A. computer technology is hard for people to master

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B. How to use the Internet for beneficial purposes.

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D. How the Children’s Internet Protection Act was passed.

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