GWD 13-35,36 以前没有讨论过

Pudding

http://forum.chasedream.com/dispbbs.asp?BoardID=25&ID=70043

35我直到剛剛也是選D, 可是查了一下前人的討論貼, 又仔細重讀了一下文章, 覺得A確實是對的:

The common approach of studying causes of

population cycles by measuring the

mortality caused by different agents,

such as predatory birds or parasites

研究predatory birds or parasites導致的死亡率是為了studying causes of population cycles, A rephrases this sentence...

D, line 25-30:

In short,

the evidence implies that these insect

populations, if not self-regulating, may

at least be regulated by an agent more

intimately connected with the insect than

(30)  are predatory birds or parasites.

作者已經直接排除了self-regulating的可能性, 所以才能推出"intimately connected with the insect"這個推論的...

僅供參考...