第一节 单项选择（共30小题；每小题1分，满分30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，并在第6页答题卡上将该项涂黑。
1. ---People should spare no efforts to protect the environment.
---_____. Air pollution, as is known to all, does harm to our health.
A. All right B. Fine C. Go ahead D. Exactly
2. The preceding discussion has been based on _____ consideration of the performance of the group of learners as _____ whole.
A. the; a B. a; a C. a; the D. the; the
