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[单选题]
It is necessary that an efficient worker ______ his work on time.(1分)
A
accomplishes
B
can accomplish
C
accomplish
D
has accomplished
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参考答案
试题答案：
C
答案解释：
在句型“It is necessary that…”中that 从句中要用虚拟语气，其构成是should do。
相关题目
Every means ______ since then.(1分)
No one doubts ______ he is the best leader in the company.(1分)
4
Ms.Wang has a ______for French novels.(prefer)
1.Many of us believe that a person‘s mind becomes less active as he grows older. But this is not true， according to Dr Jarvik， professor of psychiatry at the University of California. She has studied the mental functioning of aging persons for several years. For example， one of her studies concerns 136 pairs of identical twins， who were first examined when they were already 60 years old. As Dr Jarvik continued the study of the twins into their 70s and 80s， their minds did not generally decline as was expected. However， there was some decline in their psycho-motor speed. This means that it took them longer to accomplish mental tasks than it used to. But when speed was not a factor， they lost very little intellectual ability over the years. In general， Dr Jarvik‘s studies have shown that there is no decline in knowledge or reasoning ability. This is true not only with those in their 30s and 40s， but with those in their 60s and 70s as well. It is true that older people themselves often complain that their memory is not as good as it once was. However， much of what we call “loss of memory” is not that at all. There usually was incomplete learning in the first place. For example， the older person perhaps had trouble hearing， or poor vision， or inattention， or was trying to learn the new thing at too fast a pace. In the cases where the older person‘s mind really seems to decay，it is not necessarily a sign of decay due to old age. Often it is simply a sign of a depressed emotional state.(10分)1.1 This passage is mainly about ____.(2分)A. how Dr Jarvik studied mental functioning of the twins.B. what caused mental decay.C. the results evidenced by Dr Jarvik‘s studies.D. the difference between middle – aged and older persons
以“How to Help Old People Live Better”为题，写一篇征文。要求按如下三条作为文章的提纲：要点： （1）年轻人应多与老年人交谈、沟通 （2）老年人应理解年轻人的压力 （3）社会应组织相应的活动注意
His wound caused him great _____ (suffer).
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When television first began to expand, very few of the people who had become famous as __31__ announcers were able to be equally effective __32__ television. Some of the difficulties they experienced when they were trying to __33__ themselves to the new medium were technical. When __34__ on radio, for example, they had become __35__ to seeing on behalf of the listener. This art of seeing for others __36__ that the announcer has to be very good __37__ talking. Above all, he has to be able to __38__ a continuous sequence (序列) of visual (视觉的) images which add meaning __39__ the round the listener hears. In the __40__ of television, however, the announcer sees __41__ with the viewer. His duty, __42__, is completely different. He is there to make __43__ that the viewer does not __44__ any point of interest, to help him focus __45__ particular things, to help him __46__ the images on the television screen. __47__ his radio colleague, he must know the __48__ of silence how to use it at those __49__ when the pictures speak for __50__.A. television B. advertisement C. radio D. newspaper
Much labour would have been saved if the electronic computers_____________ before.
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