根据短文内容,从A、B、C、D四个选项中选出一个能填入相应空格内的最佳*。Thecomputerisaver...
问题详情:
根据短文内容,从A、B、C、D四个选项中选出一个能填入相应空格内的最佳*。
The computer is a very wonderful machine today, and it’s so 1 that it seems that we 2 live or work without it. Computers are used in many 3 , such as offices, factories, big shops, schools and even homes. With the computer people are living a better 4 .
The computer is one of the greatest inventions in the 20th century. The first computer 5
in America in 1946 which was named ENIAC, and it was not only very 6 , but also quite heavy. It was as big as ten ordinary (普通的) rooms!
But the computer is developing very fast. Today they’re becoming smaller and smaller, lighter and lighter, and 7 faster and faster. There are so many kinds of different computers in the market that you can choose one that you like best.
The computer can do a lot of things for people, and it also helps us to learn about the real world. With the computer you can 8 an e-mail just in a few seconds to your friend far away, but if you post the letter, it will take your friend quite a long time to receive your 9 .
Now you can see the computer really gives us a very nice picture about the world of tomorrow. So as a student in the 21st century, you have to work hard and learn how to 10 the computer very well. Don’t you think so?
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【回答】
1—5CBDAC 6—10BDDAB
知识点:其他
题型:完型填空
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以KCl和ZnCl2混合液为电镀液在铁制品上镀锌,下列说法正确的是( )A.未通电前上述镀锌装置可构成原电池...
问题详情:以KCl和ZnCl2混合液为电镀液在铁制品上镀锌,下列说法正确的是()A.未通电前上述镀锌装置可构成原电池,电镀过程是该原电池的充电过程B.因部分电能转化为热能,电镀时通过的电量与锌的析出量无确定关系C.电镀时保持电流恒定,升高温度不改变电解反应速率D.镀锌层破...
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目前,制造*自己航母的呼声越来越高,如图所示是某位网友提供的*航母的设想图.一艘航母的舰载机飞离航母后,则...
问题详情:目前,制造*自己航母的呼声越来越高,如图所示是某位网友提供的*航母的设想图.一艘航母的舰载机飞离航母后,则有()A.航母将上浮,所受浮力减小B.航母将下沉,所受浮力增大C.航母将下沉,所受浮力减小D.航母始终漂浮,所受浮力不变【回答】考点:物体的浮沉条件及其应用.347398...
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下列各组词语中,没有错别字的一组是A.闲情逸致 声名鹊起 意气相投 金碧辉煌B.情随事迁 隐约...
问题详情:下列各组词语中,没有错别字的一组是A.闲情逸致 声名鹊起 意气相投 金碧辉煌B.情随事迁 隐约其辞 夸夸奇谈 前赴后继C.梦寐以求 百折不挠 闻过饰非 惨淡经营D.言简意赅 言近指远 伸张正义 良辰...
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设,若,则a=( )A.-1 B.0 C.2 D.3
问题详情: 设,若,则a=( )A.-1 B.0 C.2 D.3【回答】D知识点:导数及其应用题型:选择题...
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