3．correspond ________ sb. 与......通信

　　correspond ________ sth. 与......相一致

　　4．drop ________ 退学，辍学；退出，脱离

　　drop out ________ 退出......，脱离......

　　drop ________ 后退

　　drop ________ 落下

　　5．stand ________ (指缩写或符号)是......意思，代表，象征；支持，主张

　　stand ________ 反对

　　stand ________ 站在旁边；旁观；支持

　　stand ________ 显眼；突出

　　6．________...in mind 记住；牢记

　　make ________ one's mind 下定决心；拿定主意

　　________ one's mind 改变主意

　　7．classify...________... 把......界定为......

　　classify...________... 把......分成......

　　classify...________... 按......把......分类

　　8．make ________ difference 有关系；有影响；有区别；起重要作用

　　make ________ difference 没有差别

　　make________ the difference 大不相同，关系重大

　　【答案】　1.to；to；down；over；up　2.at；under；in；of

　　3．with；with/to　4.out；of；back；behind　5.for；against；by；out　6.keep；up；change　7.as；into；by　8.a；no；all

　　Ⅲ.重点句式

　　1．____________(没有) the Internet, these people __________(就会) fewer avenues to meet people.

　　2．Another truly wonderful aspect of the Internet is ____________(方式) people use it to build social bonds.

　　3．I feel it is important for us ____________ to limit our use of the Internet, ____________(或者......) to learn how to handle the problems it has caused.

4．People often have to overcome failures __________(之前) they can