题目内容
18．_____ the Internet is of great help，I don't think it's a good idea to spend too much time on it．（ ）| A． | If | B． | While | C． | Because | D． | As |
分析 虽然因特网很有用处，但我认为在网上花太多的时间不是个好主意．
解答 答案：B，本题考查连词的用法．if引导条件状语从句；because引导原因状语从句；while和as都可作"虽然，尽管"将，都可以引导让步状语从句，但as引导让步状语从句时要部分倒装，while引导的让步状语从句用正常语序，且常放在主句的前面．
点评 本题考查连词的用法，要注意区分各个连词的用法．
练习册系列答案
相关题目
13．We __a different life without the amazing discoveries produced by great scientists．（ ）
| A． | lived | B． | would live | ||
| C． | had lived | D． | would have lived |
3．---Haven't you finished your application form online？
---Yes．My classmates and I _____ on it for the whole afternoon．（ ）
---Yes．My classmates and I _____ on it for the whole afternoon．（ ）
| A． | have worked | B． | are working | ||
| C． | have been working | D． | worked |
10．By tradition，in Britain，21guns are fired as a general rule _____ the Queen on her birthday．（ ）
| A． | in memory of | B． | in salute to | ||
| C． | on behalf of | D． | in celebration of |