GWD21-Q39比较对象双方单复数同形问题

GWD21-Q39:

Almost like clones in their similarity to one another, the cheetah species’ homogeneity makes them especially vulnerable to disease.

1. the cheetah species’ homogeneity makes them especially vulnerable to disease

2. the cheetah species is especially vulnerable to disease because of its homogeneity

3. the homogeneity of the cheetah species makes it especially vulnerable to disease

4. homogeneity makes members of the cheetah species especially vulnerable to disease

5. members of the cheetah species are especially vulnerable to disease because of their homogeneity

答案E, 我的问题是E比B好的理由除了clones和members比clones和species概念更加相等这个原因以外，还包括单复数对称这个原因吗？

比较题里，比较对象单复数是必须同形还是不一定的？

一樣的疑惑!!!!!!!!!!

怎麼看都覺得強迫把問題歸咎於單複數也太勉強了吧

比較句應該只有規定對比名詞需同質,沒有規定連單複數都必須同型吧!?

請大人指點

个人愚见，一般来说自然是越对称越好， 名词对名词没有错，