题目

- A number of people camped overnight __________ others waited in line for hours in order to be among the first in China to buy iPhone 4. 【黑龙江省哈市五县2011年高考模拟试卷英语卷（22）】【连词】                                                                                                               A. when          B. while                         C. as D. but   答案： B 考查连词。此处while表示对比，意为“然而，可是”。  

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