请教 885-SECTION 1-11

wildwind

11.   Although the lesser cornstalk borer is widely distributed, control of them is necessary only in the South.

(A) the lesser cornstalk borer is widely distributed, control of them is

(B) widely distributed, measures to control the lesser cornstalk borer are

(C) widely distributed, lesser cornstalk borer control is

(D) the lesser cornstalk borer is widely distributed, measures to control it are（D）

(E) it is widely distributed, control of the lesser cornstalk borer is

答案E 为何错?

是否因为在 E 中, it 会被认为指代control of the lesser cornstalk borer , 造成逻辑错误.

那么在这种结构里, it必然是指代主句的主语吗?

rt316

以下是引用wildwind在2004-6-7 1:21:00的发言：

11.   Although the lesser cornstalk borer is widely distributed, control of them is necessary only in the South.

(A) the lesser cornstalk borer is widely distributed, control of them is

(B) widely distributed, measures to control the lesser cornstalk borer are

(C) widely distributed, lesser cornstalk borer control is

(D) the lesser cornstalk borer is widely distributed, measures to control it are（D）

(E) it is widely distributed, control of the lesser cornstalk borer is

答案E 为何错?

是否因为在 E 中, it 会被认为指代control of the lesser cornstalk borer , 造成逻辑错误.

那么在这种结构里, it必然是指代主句的主语吗?

一般来说，如果主语在逻辑上可以由it指代，那么it优先指代主句的主语。但是，如果主句的主语是人，那么从逻辑上就不合适用it指代；或者，当主句主语是复数名词，那么，it从语法上就不能指代主语，而有可能指代主句中其他从语法上可以指代的单数名词。

wildwind

非常感谢!!!!

GreenHorse

我倒是不太明白为什么C错? 请指点.