各位大神,prep 07中的115题答案选C,我选的D,笔记中说到加they重复,可是我认为ABC中的shown有问题啊,
studies have linked...and shown,这样的结构平行?shown前不需要加have吗?还是说在语法上sb have done sth and done sth是对的?
Many population studies have linked a high-salt diet to high rates of hypertension and shown that in societies where they consume little salt, their blood pressure typically does not rise with age.
(A) shown that in societies where they consume little salt, their
(B) shown that in societies that have consumed little salt, their
(C) shown that in societies where little salt is consumed,
(D) they showed that in societies where little salt is consumed,
(E) they showed that in societies where they consume little salt, their作者: applemay 时间: 2012-1-2 20:45