1. A person will conduct prosocial behavior when he ________.

　　A. gives up the use of cellphone

　　B. uses the cellphone a lot

　　C. takes part in community service

　　D. is closely connected to his friends

　　2. Students who use cellphones a lot are less willing to volunteer for a community service activity because ________.

　　A. they feel directly connected to others

　　B. they have broader social responsibilities

　　C. they are more willing to solve world problems

　　D. they want to separate themselves from others

　　3. What makes Facebook users different from cellphone users?

　　A. The difference in connectedness.

　　B. Different purposes.

　　C. Different accounts.

　　D. Different human needs.

　　4. Compared with cellphone users, Facebook users probably ________.

　　A. feel more connected to their friends

　　B. have a lot more friends

　　C. don’t like to engage in prosocial behavior

　　D. are more likely to engage in prosocial behavior

　　答案与解析

　　【文章大意】

　　本文是科普说明文。研究发现，经常使用手机的人往往不愿意从事有利于他人和社会的活动，变得自私。

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