Will it be ages he goes back to school? I'm so worried about him.A. before B. afterC. when D. as 题目和参考答案——青夏教育精英家教网—

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Will it be ages ______ he goes back to school? I'm so worried about him.

A. before B. after

C. when D. as

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So difficult____it to work out the problem that I decided to ask Tom for advice.

A. I did find B. didI find

C. I have found D. have I found

_____we understand things has a lot to do with what we feel.

A. Where B.How

C.Why D. When

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡的相应位置上。

Why is pink or purple a color for girls and blue or brown for boys?

The answer depends largely 1. cultural values as well as personal experiences. To the Egyptians, green was a color 2. represented the hope and joy of spring, while for Muslims, it means heaven. Red is a symbol of good luck in many cultures. During the Spring Festival in China, children 3. (give) money in a red envelope to bring good fortune in the New Year. For many nations, blue is a symbol of protection and religious beliefs. Greek people often wear a blue necklace hoping to protect 4. against evils（灾祸）.

People’s 5. (choose) of colors is also influenced by their bodies’ reactions toward them. Green is said to be 6. most restful color. It has the ability to reduce pain and relax people both mentally 7. physically. People 8. (work) in green environment have been found to have fewer stomach aches.

Red can cause a person’s blood pressure to rise and increase people’s appetites（食欲）. Many decorators will include different shades of red in the restaurant. And many commercial websites will have a red “Buy Now” button because red is a color that 9. (easy) catches a person’s eye.

Blue is another calming color. Unlike red, blue is believed to cause people to lose appetite. So 10. you want to eat less, some suggest that eating from blue plates can help.

A person who has slept well will have a clear mind and work efficiently in the daytime

______ people with sleep disorders find it difficult to concentrate during the day.

A. unless B. while

C. if D. until

________the students came from different countries, they got along quite well in the summer camp.

A. While B. Unless

C. Since D. Until

You won’t find paper cutting difficult _____you keep practicing it.

A. even if B. as long as

C. as if D. ever since

The real reason why prices ____ , and still are, too high is complex, and no short discussion can satisfactorily explain this problem.

A. were B. will be

C. have been D. had been

—— My room gets very cold at night.

—— ____.

A. So is mine B. So mine is

C. So does mine D. So mine does

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