基本信息
第二部分:英语知识运用(共两节,满分45分)
第一节 单项填空(共15小题;每小题1分,满分15分)
21. As is known, ______ good knowledge of basic physics helps us better understand ______ natural phenomena. A. a, a B. a, the C. /, / D. a, /
22. Was it at the end of the exploration ______ you discovered the evidence ______ the monsters used to exist in the lake.
A. which; which B. that; that C. where; that D. that; which