答案解析： 1.选D. what little+n表＂所仅有的＂
2.选C flaw＂缺陷，瑕疵，裂痕＂ There is only a flaw in his argument.
mistake和error强调的是＂错误＂，weakness＂弱点＂
3.选B collide 碰撞，撞 The two cars collided, but luckily no one was seriously hurt.
strike打，袭击，攻击 He struck the boy a violent blow.
bump碰，冲撞，偶遇 I bumped into an old friend of mine on the road.
crash碰撞，坠落 The car crashed into a tree.
4.选C call(draw) one's attention to 将某人的注意力吸引到……
pay attention to 注意，重视 Please pay attention to your spellings.
5.选A at one's service 听候某人吩咐，听凭某人使用．（其他没有如此搭配）
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