问大家两道语法题 - ChaseDream

In the sixteenth century, the push for greater precision in measuring time was not, like more recently, motivated by complicated philosophical questions about the nature of matter and the universe, but the practical matters of navigation: sailors simply needed more highly accurate timepieces in order to compute their longitude form the positions of the stars.

E.motivated not by complicated philosophical questions about the nature of matter and the universe, as has been the case more recently, but by the practical matters of navigation
答案是E,我选了C.觉得E中后面has been的发起者不是很清楚。请指导。

The themes that Rita Dove explores in her poetry is universal, encompassing much of the human condition while occasionally she deals with racial issues.

A.is universal, encompassing much of the human condition while occasionally she deals

B.is universal, encompassing much of the human condition, also occasionally it deals

C.are universal, they encompass much of the human condition and occasionally deals

D.are universal, encompassing much of the human condition while occasionally dealing

E.are universal, they encompass much of the human condition, also occasionally are dealing

这个也困惑，从explores可以看出前面themes应该是单数形式把，为什么是用are呢？谢谢。

A.not, like more recently, motivated by complicated philosophical questions about the nature of matter and the universe, but the practical matters of navigation

B.being motivated by the practical matters of navigation, instead of complicated philosophical questions about the nature of matter and the universe, as it has been recently

C.motivated not by complicated philosophical questions about the nature of matter and the universe, like they were more recently, but by the practical matters of navigation

D.motivated by the practical matters of navigation, not complicated philosophical questions about the nature of matter and the universe, which was the case more recently

-- by 会员飞行2010 (2010/2/22 7:58:14)