第二部分：英语知识运用（共两节，满分35分）
第一节：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。
21. It is reported that _______ child can learn and benefit greatly from being read to right from ________ day when they are born.
A. the, the B. the, a C. a, a D. a, the
22. ______ humor may be likely to lead a pleasant atmosphere, you’ve got to be careful about your material.
A. While B. Because C. Since D. If
