[求助]大全59

1.                             Affording strategic proximity to the Strait of Gibraltar, Morocco was also of interest to the French throughout the first half of the twentieth century because they assumed that if they did not hold it, their grip on Algeria was always insecure.

(A) if they did not hold it, their grip on Algeria was always insecure

(B) without it their grip on Algeria would never be secure

(C) their grip on Algeria was not ever secure if they did not hold it

(D) without that, they could never be secure about their grip on Algeria（B）

(E) never would their grip on Algeria be secure if they did not hold it

这里的it指代什么，清楚吗？另外，请问其他几个选项错在什么地方，谢谢！

what do "they" and "it" refer to?

They : French?

It: Morocco ?

以下是引用天山在2003-11-7 14:45:00的发言：
59题的答案不是（B)吗？ 简洁明了
（a)错误明显，单是时态就可排除了
(c)中not ever, 错误如此明显，out!  
(d) witout that, that 用法错误。
（e)  因从句里不能用倒装，马上排除。

Very clear.

Pumpkin, about assume and with/without 非常有见地

谢谢Pumpkin，你对assume的解释太好了。

只是感觉对With/Without的解释有点看不懂，感觉With/without后接名词的从属关系好象要比这复杂，如句子：Without a car, your trip to bufflo will be two days. 就不符合你说的情况。 但我也总结不好。

anyway, thanks.

虚拟语气，if条件从句谓语动词用虚拟语气，主句谓语动词也要用虚拟语气。

从句谓语动词用过去时，主句用should/would/could/might +动词原形