Question

Nothing is more important than health, so it is unwise to build up our business ________ our health.

1. A.
   at the mercy of
2. B.
   at the expense of
3. C.
   in face of
4. D.
   in relation to

Answer 1

B

此题是词组辨析：at the mercy of 任由…支配，.at the expense of以…为代价 in face of面临                        in relation to和…有关，根据句意：没有什么比健康重要，以健康为代价扩大生意是不明智的。所以选B。