大全-C-17

17.   Most North Carolina ski resorts broadcast music onto the slopes; skiers can choose among hard rock, soft pop, and “beautiful music” slopes, there are no slopes without music.

(A) skiers can choose among hard rock, soft pop, and “beautiful music” slopes, there are

(B) because skiers can choose hard rock, soft pop, or “beautiful music,” there are

(C) however, skiers can choose among hard rock, soft pop, “beautiful music,” and

(D) although skiers can choose among hard rock, soft pop, and “beautiful music” slopes, there are（D）

(E) skiers can choose among hard rock, soft pop, “beautiful music” slopes, but

我认为B.答案D.为什么?

去搜索一下，以前的NN有精彩分析。

我早搜过了,找不到呀