在解答單項選擇題時標(biāo)點符號的作用不可忽視。在做題時一個標(biāo)點符號可能就決定了一個題的答案。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」從前后句間的句號可知，后半句是獨立的句子而非從句，因此不可以在句首使用從屬連詞。故答案為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」從破折號可知，符號后面的內(nèi)容是對前面句子的補充說明。故答案為C.

    「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」由分號可知后半部分應(yīng)該是一個獨立的句子。故答案應(yīng)為D.