[求助】If一般现在时，一般现在时； 15版 OG verbal，38

gavensc

[求助]OG 46 题（已看过提问总结）我还是有疑问~

46. A study commissioned by the Department of Agricul­ture showed that if calves exercise and associated with other calves, they will require less medication and gain weight quicker than do those raised in confinement. (A)  associated with other calves, they will require less medication and gain weight quicker than do (B)  associated with other calves, they require less medication and gain weight quicker than (C)  associate with other calves, they required less medication and will gain weight quicker than do (D)  associate with other calves, they have required less medication and will gain weight more quickly than do (E)   associate with other calves, they require less medication and gain weight more quickly than 对OG的解释不是很能接受： “The first and last verbs in the series of verbs that describe the calves are in the present tense, so the two in the middle should be as well: the calves exercise....associate...require...gain weight.... 难道不是If 一般现在时，然后主句一般现在时么？ 觉的主语用“will”更好，i.e. C 求大牛解释，万分感谢。

zhaokai09

the problems of choice C:
# two actions describing the same subject should use same tense.
# at end of choice C, the verb DO changes the tense of the sentence, so it should repeat the verb.

So E is more elegant and concise.

if C is "associate with other calves, they WILL require less medication and gain weight more quickly than ",  it is also acceptable.

open to disscuss!

gavensc

额，我看错了，把C看成你说的这个了”associate with other calves, they WILL require less medication and gain weight more quickly than“。。。。。
所以觉得C更好。
多谢了啊