再问补充200

200. Although the bite of brown recluse spiders are rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its poison.

(A) brown recluse spiders are rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its

(B) brown recluse spiders are rarely fatal, they cause chronic flesh wounds and pose the greatest danger to the infant and elderly, who are particularly vulnerable to their

(C) the brown recluse spider is rarely fatal, it causes chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to their

(D) the brown recluse spider is rarely fatal, it causes chronic flesh wounds and poses the greatest danger to infants and the elderly, who are particularly vulnerable to its（D）

(E) the brown recluse spider is rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its

答案是d, 我错选了b, 做时觉得d不大妥当的地方就是it 指代不清楚，既可以是bite,也可以是spider, 当然逻辑上讲第二个its应该指spider, 但我又想bite在这里是中心词，会不会有优先指代的说法

选b是想通过单复数差别，they 和their 都指代spiders 了，不过spiders 是不是和单数bite又不配了呢？

哎，脑子又成浆糊状了，麻烦大家讲解讲解！

当然从后面its看，they和spiders都有问题，所以D无懈可击。

这个看错了，B指代好像没问题。

我觉得D也不是无懈可击呀。从逻辑上说， 前面的it指代bite,而后面的its应该是指代spider吧。这两个不就不一致了吗？困惑......

请指正。谢谢。

The 'its' should still refer to 'bite''s. Maybe american can understand it, but we can't. If some NN in US or CA can ask some native about this point?

it 和its在句子中应该指代同一事物吧，

不过tianwan斑竹所说的it 和its都指代bite ,我好像有点映像lzm书中是这么解释的，老美的逻辑，汗！

jnlvo斑竹，多谢指正，我当时怎么就没看到个主谓一致问题呢