第二部分：英语知识运用（共两节，满分45分）
第一节 单项选择（共15小题；每题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. Jerry walked on _____ tiptoe so as not to disturb _____ other readers in _____ reading room.
A. the; the; the B. the; /; a C. /; /; the D. /; the; the
22. — The flags of every independent country are_____ just colorful pieces of cloth and thread sewn together.
— Exactly. A flag often symbolizes beliefs and culture.
A. rather than B. no more than C. more than D. other than
