1.The story shows that ________ knowledge of ________ first aid can make ________ real difference.
A.the; the; / B.a; /; a
C./; the; a D.a; /; /
解析:选B 句意:这个故事表明掌握急救知识确实能起很大的作用。knowledge是不可数名词,一般前面不能加不定冠词,但a knowledge of sth.“掌握某方面的知识”,前面需加a;first aid前面不用加冠词;make a difference“有影响,有关系”,是固定短语,故选B项。
2.—May I try the jacket on?
—________, but I think it will be too large for you.
A.That all depends B.By all means
C.With pleasure D.You're welcome
解析:选B 考查情景交际。句意:“我能试一下这个夹克吗?”“当然可以,但是我觉得你穿着太大了。”That all depends“视情况而定”;By all means“一定,当然可以”;With pleasure“乐意效劳”;You're welcome“不客气”。根据句意可知选B。