一、单项填空（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。
1. Some small shops in Britain usually close for hour at lunchtime.
A. an; the B. a; 不填 C. a; the D. an; 不填
2. In cold winter, the temperature in Harbin often remains zero all day.
A. above B. below C. over D. under
3. None of them talked. They finished their meal in .
A. silence B. order C. place D. public
4. — Where is Joan?
— She a novel in her study.
A. has read B. reads C. will read D. is reading
