山东省2022年中考英语鲁教版(五四制)复习训练-语法专题九时态和语态.docx
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1、用括号里所给动词的适当形式填空。AIf youve ever stayed up late and then gotten up early the next day, you know what its like not to get enough sleep. Its a very uncomfortable feeling. In fact, for many years scientists 1._(believe) that sleep is like foodif we dont get enough of it, we might get sick or even die. Bu
2、t now they 2._(start) to wonder just how much sleep we need.Researchers at Imperial College London did a study on fruit flies(果蝇). They found that flies that slept for very short periods of timeabout 72 minutes a daystill 3._(live) about as long as flies that slept for normal amounts of time. One of
3、 the female flies slept for just 4 minutes each day on average. This has led the researchers to wonder if sleep is less necessary than we previously thought.Humans are very different from fruit flies. Sleep 4._(help) repair tissue(组织) when our bodies perform a lot of maintenance(维护). Sleeping allows
4、 our bodies 5._(get) well again from the stress we experience each day.But can we really die from not sleeping? No humans have died so far from 6._(stay) awake for too long. The current(现在的) world record for sleeplessness 7._(hold) by Randy Gardner from the US, who stayed awake for 11 days and 25 mi
5、nutes in 1964.Scientists 8._(not find) any animals that dont sleep at all so far. Even animals that only sleep for short periods are not completely sleepless.BRay was thought to be a strange boy. One day when he was flying his kite, he said to himself, “Did anybody ever try to fly a kite at night? I
6、 think it must be very fun. But the kite cant be seen in the dark, what if I tie a light to it? That would be really good. I 1._(try) it tonight.”As soon as it was dark, he 2._(take) his kite and lantern, and went to a large field about a mile from his home. He tied the lantern to the tail of his ki
7、te. The lantern 3._(make) of paper. The kite flew higher and higher. He tied the string(线) to a tree, then he stood there, staring at his kite. It floated(飘) high up into the air. How wonderful! While Ray 4._ (enjoy) his special kite, some people in the village also saw it.“Look! A light 5._(fly) in
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