大全59：关于it的指代，有点糊涂了……
59. 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 LACE>AlgeriaLACE> was always insecure.
(A) if they did not hold it, their grip on LACE>AlgeriaLACE> was always insecure
(B) without it their grip on LACE>AlgeriaLACE> would never be secure
(C) their grip on LACE>AlgeriaLACE> 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 LACE>AlgeriaLACE> be secure if they did not hold it
一开始看这5个选项，觉得每个it指代的都是Algeria，但是看了答案后体会出A、B的it指的是前面提到的Morocco。想问一下，当一个代词前后都出现可以指代的名词时，这个代词是不是只能指代前面的那个名词？ | 
