[填空题]People who are shortsighted always have them.

[填空题]People who are shortsighted always have them.

[简答题] Thigh, robot People who have suffered debilitating strokes often have to cope with impaired muscles that do not work properly. Even a simple act such as standing up from a chair and walking a few steps can become extremely difficult. Stroke victims often have to rely on wheelchairs, sticks, walking frames and other "orthotic" devices to move about. But a new generation of active orthotic devices, capable of augmenting or replacing lost muscle function, is in the works. These devices use an assortment of complex computer and mechanical technology, borrowed from the field of robotics, to help patients get around. They are being made possible by the falling prices and improving performance of sensors, computer control systems and battery technology. As well as benefiting elderly patients with permanent paralysis or muscle dysfunction, such devices could also help people in recovering from "arthroscopic" (literally, "looking within the joi

[单项选择]People who have held these positions of authority are much respected and it will be of benefit to them later in their career.
A. 担任这权威的人受人尊重，而且以后对他们的事业也很有益。
B. 担任这权威职务的人十分地受人尊重，而且日后对他们的事业也很有益处。
C. 世人尊重担任这职务的人，而且以后有益于他们的事业。
D. 担任这权威职务的人很受人尊重，而且对他们的事业也很有益

[单项选择]

American people does not always have a relaxing nap. David Dinges, an expert of sleep at the University of Pennsylvania School of Medicine, says that the fact is there even exist some bans on that people who need sleep, People don’t want to be caught asleep or napping at work. There is a proverb goes, "Some sleep five hours, nature requires seven, laziness nine and wickedness eleven."
However, that is wrong. You need to take naps when you need them in order not to fall asleep at work. Dr William Dement of Stanford University who has made a great number of sleep researches argues that people’s attitude towards napping need to be changed.
Lately, "American sleep debt" was identified by a national commission as important as the national debt. The commission focused on the dangers of sleepiness. They suggested that sleepiness could cause industrial accidents or make people fall asleep while driving. This explains that why we have
A. They think too much sleep is dangerous.
B. They think only lazy people need to have a nap.
C. They don’t want to be seen that they were sleeping at work.
D. They want to do more work.

[单项选择]

For the people who have never traveled across the Atlantic the voyage is a fantasy. But for the people who cross it frequently one crossing of the Atlantic is very much like another, and they do not make the voyage for the (41) of its interest. Most of us are quite happy when we feel (42) to go to bed and pleased when the journey (43) . On the first night this time I felt especially lazy and went to bed (44) earlier than usual. When I (45) my cabin, I was surprised (46) that I was to have a companion during my trip, which made me feel a little unhappy. I had expected (47) but there was a suitcase (48) mine in the opposite comer. I wondered who he could be and what he would be like. Soon afterwards he came in, He was the sort of man you might meet (49) , except that he was wearing (50) good clothes that I made up my mind that we would not (51) whoever he was and did not say (52) . As I had expected
A. to shut
B. for shutting
C. in shutting
D. but shut