基本信息
ⅰ. 单项填空 1. —i have heard you got injured in a traffic accident this afternoon. —________. it is not very serious and i just need a few days’ rest. a. i think so b. don’t mention it c. don’t worry d. it won’t bother me 2. in ancient times, human beings were at ________ mercy of nature and they were often in ________ danger of losing their lives. a. the; / b. the; the c. /; d. /; the
