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）
从A、B、C、D四个选项中，选出可以填入空白的最佳选项。
21.Rock climbing is _________ great fun. You will get close to ________ nature and take adventures at the same time.
A. /; / B. a; / C. a; the D. /; the
22.He was faced with the _______ of whether or not to return to his country after he got the doctor’s degree in America.
A． situation B． circumstance C. environment D． dilemma
23.I _______ passed the final examination ;I got only 60.
A.legally B. obviously C. narrowly D.occasionally
