ManyAmericanshavefoundthecellphonevaluableinprovidinghe...

问题详情：

Many Americans have found the cell phone valuable in providing help in emergencies and free time entertainment. (41.)M________， it has also brought up (42.) p________ in careless driving, irritating behaviors in public and high expenses.

Cell phones are also (43.)________ (流行的) in China, and many students own them. The question is (44.)________ students should be allowed to use them at school. Some parents support it just for the need to communicate with their children, (45.)w________ some others think it a bad idea, worrying that it will disturb usual educational (46.)________ (环境).

In my opinion, (47.)________ is not that necessary for us to have cell phones in school. Busy with studies and after­class (48.)________ (活动), we do not have much time to call others. (49.)________， it is true that parents and students have a need to talk to each other from time to time. I suggest schools provide more pay phones on campus so that parents and students can have easier access (50.)________ each other.

【回答】

    while　 lems　43. popular　44. whether　  e

ronment/surroundings　47. it　     vities　ver　50. to

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