[讨论] my OG小小小小问题

烦请帮忙解惑呀

OG-25

The golden crab of the Gulf of Mexico has not been fished commercially in great numbers, primarily on account of living at great depths- 2,500 to 3,000 feet down.

(C) because it lives

(D) because of living

【Q】

   用because of 不是会更简洁吗? (the ans is C)

OG-71

The cameras of the Voyager ll spacecraft detected six small, previously unseen moons circling Uranus, which doubles to 12 the number of satellites now know as orbiting the distant plane.

(A)  which doubles to 12 the number of satellites now know as orbiting

(B)  doubling to 12 the number of satellites now know to orbit
                

【Q】

1. 为何用
                   V-ing 而不用
                   , which呢??

2. Know as v-ing 与
                   Know to V 有合不同呢??

OG-81

In an effort to reduce their inventories, Italian vintners have cut prices; their wines are prices to sell, and they do.

【Q】

  最后的they 是指wines吗?

OG-102

Beatrix Potter, in her book illustrations, carefully coordinating them with her narratives, capitalized on her keen observation and love of the natural world.

(B) In her book illustrations, carefully coordinating them with her narratives, Beatrix Potter

(C) In her book illustrations, which she carefully coordinated with her narratives, Beatrix Potter

【Q】

   答案C没有疑问；如果在没有答案C的状况下，是否可选B呢？

OG-113

The original building and loan associations were organized as limited life funds, whose members made monthly payments on their share subscriptions, then taking turns drawing on the funds for home mortgages.

(A) subscriptions, then taking turns drawing

(C) subscriptions, and then took turns drawing

主词皆是members
            ，
                made与
                taking 皆为members所做的动作，如果以平行的角度来说C的答案为胜；

【Q】

   A是否可做为伴随动作
                第二个动词用V-ing
            ，烦请说明为何这样不妥呢???

哇
            如果只有里面某题
            可以解释
            烦请帮忙小女子呀~