第一节单项填空 (共15小题；每小题l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. The old woman walks her dog after ______ supper every day.
A. the B. an C. 不填 D. a
2. I don’t think possible to master a foreign language without much memory work.
A. that B. this C. it D. one
