第一节 单项填空（共20小题；每小题1分，满分20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. Beginning college is exciting：many of us can be easily excited by _______ details of running _______ well-balanced life.
A. ／; the B. the; a C. ／; a D. the; ／
22. Careful surveys have showed that audience _______ teachers and students are more likely to take seats _______ directed.
A. 1ike; that B. as; that C. 1ike; as D. as; like
