LZM 11-38 , 主谓一至？

LZM 11-38

In the most common procedure for harvesting forage crops such as alfalfa, as much as 20 percent of the leaf and small material, which is the most nutritious of all the parts of the plants, shattered and fell to the ground.

A) which is the most nutritious of all the parts of the plants, shattered and fell

B) the most nutritious of all parts of the plant, shatter and fall

C) the parts of plant which were most nutitious, will shatter and fall

D) the most nutritious parts of the plant, shatters and falls

E) parts of the plant which are the most nutritious, have shattered and fallen

My questions is "as much as 20 percent of the leaf and small stem material" 应该被认为主语，那么，谓语应该是单数还是复数。

另外，如果有一句句子：

There ___  a piece of paper and a glass of water on the table. 此处应用is or are?

我的意思，当两个不同的不可数名词作主语时，动词应用单数还是复词？

谢谢。

1. as much as 决定了谓语单数形式, 虽然of 后面有两个dd并列, 但只能是作为一个整体, 句意也体现出来了;

2. there be句型中, be的单复数与后面一致, 既然是两个不同dd的并列, 自然是复数;

Springfield:

谢谢回复。

根据GMAT原理， 20 percent of+ 主语，如主语是可数名词，谓语用复数，主语是不可数名词，谓语用单数。

还有一问，如果是 20 percent of A and B 为主语，A 和B都是不可数名词，那此时谓语为何？

请再指点一下。