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12.There is no doubt that computers are very useful in technology and business.With the (86)hhelp of computers,doctors can find diseases easily and solve other problems.In factories,robots (87)control(l)ed(控制) by computers can do work that is dangerous to humans.In business,computers are used to place and cancel orders.They are also making the workplace (88)safer(安全) and better.
Since the Internet(89)came into being,people's lives at home have changed,too.More and more people have personal computers,(90)andthey use them to play games and watch movies.Instead of writing letters on paper,people communicate by sending e-mails and (91)chatting online.The whole world is connected.The Internet is making the world smaller,(92)like a village.
Computers have improved our lives.They have brought us (93)convenience(方便),but they have brought problems,too.For example,if we (94)eexpose ourselves to computers too long,we may get headaches or sore eyes.Besides,not everything we read on the Internet is true or good for us.Computers help us at work and at home,but they must be used (95)pproperly.

分析 本文叙述了电脑在科技和商业领域发挥越来越重要的作用.

解答 86.help87.control88.safer 89.came come into being/existence90.and 91.chatting 92.like 93.convenience 94.expose 95.properly
86.help 考查固定搭配.with the help of…在…的帮助下,故填help.
87.control(l)ed 考查过去分词作后置定语.robot与control是动宾关系,用过去分词作定语,故填control(l)ed.
88.safer 考查比较级.根据and后的better可知,空白处应该填比较级,故填safer.
89.came come into being/existence产生,形成,开始存在,故填came.
90.and 考查并列连词.句意:越来越多的家庭开始拥有个人电脑,并且,他们使用电脑来玩游戏、看电影.两个分句是并列关系,故填and.
91.chatting 考查固定搭配.By通过,后跟动名词作宾语,chat的动名词形式是双写字母"t"再加ing,故填chatting.
92.like 考查介词.互联网把整个世界都变小了,就像一个村庄一样,like意为"像",是介词,故填like.
93.convenience 考查名词.convenient方便的,其名词形式是convenience,bring sb sth带给某人某物,故填convenience.
94.expose 考查固定搭配.expose sb to sth暴露于…,故填expose.
95.properly 考查副词.句意:电脑帮助我们工作和休闲,但人们必须合理地使用电脑.修饰动词use用副词,properly合理地,故填properly.

点评 做这种类型的题目要逐句分析,前后一致.选择答案时,要考虑整个句子的内容,包括搭配、时态、语法等. 答案全部填完后,再通读一遍,检查是否通顺流畅了,用词得当,意思正确.

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