在解答单项选择题时标点符号的作用不可忽视.在做题时一个标点符号可能就决定了一个题的答案.例如：

「例」Our first destination was Indian Greek in Kansas.____was

then the frontier.

A. That B. Which C. What D. Then

「解析」从前后句间的句号可知,后半句是独立的句子而非从句,因此不可以在句首使用从属连词.故答案为A.

「例」 Everyone was on time for the meeting-_____Chris, who's usually ten minutes late for everything.

A. but B. only C. even D. yet

「解析」从破折号可知,符号后面的内容是对前面句子的补充说明.故答案为C.【外语@教育网wwwwww.for68.com】

「例」They believe that the spirits are with the body of the dead person for three days; ____there's always someone to stay with the dead body.

A. during which time B. during which

C. during when D. during this time

「解析」由分号可知后半部分应该是一个独立的句子.故答案应为D。