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，选出可填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. It was _____ terrible earthquake and _____ number of people who were killed reached more than 20,000.
A. a; the B. the; a C. the; the D. a; a
22. What the public is about is whether medical workers and scientists will be able to find a cure for the new disease in a short time.
A. concerning B. concern C. concerned D. to concern
23. The second book ________ I want to read is Business at the Speed of Thought.
A. which B. that C. what D. As
【答案】B
【解析】
试题分析：考查定语从句。当先行词有序数词、最高级修饰，或是不定代词时，定语从句只能用that引导。本题中，that作read的宾语。which和as引导非限制性定语从句；what不能引导定语从句。故选B。
考点：考查定语从句
