语法大全 全部真题 987 中的 59题

浆果

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

答案选B，哪位高人帮忙解释下呗，谢谢 ：）

winny0821

我用我土炮的方法献丑一下

A，从句貌似虚拟，主句没有虚拟标志
B，正确，白勇原话：without + n. 可以是虚拟的标志，主句有用虚拟呼应
C，虚拟的语法点与A相同，而且it跳跃指代Morocco太远，有歧义
D，曾经纠结，后来套用赵丽的原话：这个选项根本没有正确选项的长相。第一，后面的主句罗嗦笨拙，第二，that,this,these,those由于不能单独做主语，所以我认为在指代方面也不如it,they。（请大牛们指点）。
E，it 跳跃指代的问题