xiexiang

选择C:

Shoppers in sporting goods stores do very little impulse shopping, do not buy a pair of skis and a boomerang, but leave with only a basketball.

你说这样子通顺吗? 这句子完整吗? but跟and的用法不同，do A, do B, and do C, 不会是 do A, do B, but do C

xiexiang

我从来没有看过A, B, but C的句子，顶多是A, and B, but C。
所以读起来才感觉很别扭吧?