单选题 A 50-ft wave travels at speeds ______ 20 m. p. h. , and anyone who's too slow at the approach risks being smashed.

A、 in excess of
B、 in the reach of
C、 in exchange for
D、 in relation to

【正确答案】 A

【答案解析】[解析] 这句话的意思为，“50英尺的海浪以______每小时20米的速度前进，人如果太慢的话就有被撞的危险。”根据句意，不可能用in exchange for(交换)和in relation to(关于，涉及)。in the reach of表示“在可及的范围之内”，而原句显然不是指地域的概念，只能用in excess of，表示“超过”。如：He was spending in excess of his income.(他的支出超出了收入。)The money they took with them was considerably in excess of what they needed.(他们带的钱大大超过所需要的数目。)