第二部分 英语知识运用（共两节，满分35分）
第一节 语法和词语知识（共15小题，每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
Polar bears live mostly on_______sea ice, which they use as______platform for hunting seals.
A. a; a B. a; the C. /; a D. the; /
It was announced that only when the fire was under control ___ to return to their homes.
| A．the residents would be permitted |
| B．had the residents been permitted |
| C．would be residents be permitted |
| D．the residents had been permitted |
--- I am so sorry to have come late for the meeting.
--- It is not your fault. With __ rush-hour traffic and __ heavy rain, it is no wonder you were late.
| A．a; a | B．the; the | C．/; / | D．/; a |
If a person has not had enough sleep, his actions will give himduring the day.
| A． | away | B． | up | C． | in | D． | back |
What a pity. Considering his ability and experience, hebetter.
| A． | need have done | B． | must have done |
| C． | can have done | D． | might have done |
I hear they’ve promoted Tom, but he didn’t mention _____ when we talked on the phone.
| A．to promote | B．having been promoted |
| C．having promoted | D．to be promoted |