They each other for more than 5 years.A. know B. knewC. will know D. have known 题目和参考答案——青夏教育精英家教网—

题目内容

They __________ each other for more than 5 years.

A. know B. knew

C. will know D. have known

【解析】

试题分析：句意：他们认识5年多了。For后跟一段时间，所以句子是现在完成时态。故选D。

考点：考查动词时态。

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You’d better too much time playing computer games.

A. don’t spendB. not to spend

C. to not spend D. not spend

BEING an astronaut sounds cool, doesn’t it? In space, they get to do some pretty amazing things, like floating(漂浮) in zero gravity(重力).

However, there are also plenty of things that astronauts can’t do because of their weightless environment, and that’s very sad. What’s worse, they can’t even let their sadness show, because it’s impossible to cry in zero gravity.

Of course, astronauts can still produce tears(眼泪). But crying is much more difficult in space, according to The Atlantic(大西洋月刊) in January. Without gravity, tears don’t flow(流动) down out of the eyes like they do here on Earth. This means that when you cry in space, your tears have nowhere to go — they just stick(粘) to your eyes.

In May 2011, astronaut Andrew Feustel experienced this during one of his spacewalks. “Tears,” he said, “don’t fall off of your eyes. They just stay there.”

Besides making your vision(视线) unclear, this can also cause physical pain. Back on Earth, tears are supposed to bring comfort to the eyes. But that’s not the case(情况) in space. The space environment dries out astronauts’ eyes, and when tears suddenly wet the eyes, it can cause pain rather than comfort. “My right eye is stinging(刺痛) like crazy,” Feustel told his teammate during the walk.

Since gravity doesn’t work in space, astronauts need some extra help to get rid of(除去) the tears. Feustel chose to rub his eyes against his helmet to wipe(擦) the tears away. Another choice is to just wait — “When the tears get big enough, they simply break free of the eyes and float around,” astronaut Ron Parise told The Atlantic.

There are lots of small things — things like crying — that we are so used to on Earth. We usually take them for granted until they become a problem in a totally different environment, like space. There, astronauts can’t talk to each other directly. They also can’t eat or drink in normal ways. They can’t even burp(打嗝), because there is no gravity to hold the food down in their stomach. If they do burp, they just end up throwing up(呕吐) everything in their stomach, according to the UK National Space Center.

Therefore, perhaps it’s only space explorers who can honestly say, “Gravity, you’re the best.”

1. From Paragraphs 2 and 3, we can know that __________.

A. astronauts are unable to feel sad in space

B. astronauts produce fewer tears in space

C. tears produced in space flow down more slowly

D. tears produced in space don’t flow downward

2. What effect do tears have on astronauts?

A. They cause physical pain.B. They bring comfort to them.

C. They make their vision clearer.D. They float around and cause trouble.

3. The underlined phrase “take them for granted” in paragraph 7 means __________.

A. find them importantB. consider them useless

C. need them during an emergencyD. fail to notice their presence

4.Paragraph 7 is mainly about __________.

A. suggestions of how astronauts can stay comfortable in space

B. other basic things that are difficult to do in space

C. why burping is impossible in space

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The girl is at school. __________ is busy with her work.

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“You will see,” our father said.

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The following day, he took us to Ray Home. When we got there, we found a nice place to sit down. Finally, the sports began. There was a 50-meter race to see who could run fastest. All the runners were physically disabled. As the race started, all the children moved as fast as they could. Just then, one of the girls fell over and hurt her leg. She began to cry at the top of her voice.

All the children stopped to help the poor girl. Then they all held hands and finished the race together. My brother and I were surprised to see this: the children weren’t interested in winning the race－they were more interested in helping each other to finish the race.

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A. The father wanted them to do something at Ray.

B. The father asked them to help the children at Ray.

C. The father wanted them to take part in the Sports Day.

D. The father wanted them to learn something from the children.

2.. Why did all the children stop in the 50-meter race stop?

A. All the children were disabled.

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3.. What can we learn from the passage?

A. The children there can help each other.

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—No, you __________. You can do your homework first.

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完成句子（共10分，每小题2分）

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2.今天空气污染严重，你们最好还是呆在家里吧。

Air pollution is terrible today. ____ stay at home.

3.王伟和赵阳是好朋友。他们喜欢踢足球。

Wang Wei and Zhao Yang are good friends. They ____ football.

4.北京以悠久的历史和名胜古迹而闻名。

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