新PREP1 213题，C、D不会比，求助！

azhongzhong

Shoppers in sporting goods stores, unlike in department stores, do very little impulse shopping, not buying a pair of skis and a boomerang when they come in for a basketball, but they leave with a basketball only
A.in department stores, do very little impulse shopping, not buying a pair of skis and a boomerang when they come in for a basketball, but they leave with a basketball only
B.in department stores, shop impulsively very little; someone who comes in for a basketball will leave with a basketball only and not also buy a pair of skis and a boomerang as well
C.those in department stores, do very little impulse shopping, do not buy a pair of skis and a boomerang when they come in for a basketball, but leave with only a basketball
D.those in department stores, do very little impulse shopping; someone who comes in for a basketball will leave with a basketball only and not buy a pair of skis and a boomerang as well  
E.department stores, shop impulsively very little; someone will not buy a pair of skis and a boomerang when they come in for a basketball but will leave with only a basketball
这道题我选的C，答案是D，请问C那里不对？解释上说C缺了一个连词，难道就是缺个连词这一点错误啊，要是不小心就看不出来了啊。求助！

gourmettsu

形式上并列的动词之间关系要么是意思并列，要么是意思递进。这句话后面的 do not buy a pair of skis and a boomerang when they come in for a basketball, but leave with only a basketball和前面的动词之间是解释关系，所以不能并列。

连词是为了将不应该放在一句话的内容切成两句。

我的理解。。