请教几个语法大全的题目

纯斓梦

1.In 1791 Robert Carter III, one of the wealthiest plantation owners in Virginia, stunned his family, friends, and neighbors by filing a deed of emancipation, setting free the more than 500 slaves who were legally considered his property.

(A) setting free the more than 500 slaves who were legally considered

(B) setting free more than the 500 slaves legally considered as

(C) and set free more than 500 slaves, who were legally considered as

(D) and set free more than the 500 slaves who were legally considered（A）

(E) and he set free the more than 500 slaves who were legally considered as

In choices B and D the misconstructed phrases set[ting] free more than the 500 slaves... mistakenly suggest that Carter set free slaves that were not his own.这句话怎么解释？



2、After July, anyone disposing of or servicing refrigerators must capture the chlorofluorocarbons in the refrigerant chemicals.

(A) anyone disposing of or servicing

(B) those who dispose or service

(C) anyone disposing of or who services

(D) the disposal or repair of（A）

(E) someone who disposes or repairs
为什么选a 呢？ 这句话是什么意思啊？



3.In cold-water habitats, certain invertebrates and fish convert starches into complex carbohydrates called glycerols, in effect manufacturing its own antifreeze.

(A) in effect manufacturing its own antifreeze

(B) effectively manufacturing antifreeze of its own

(C) in effect manufacturing their own antifreeze

(D) so that they manufacture their own antifreeze（C）

(E) thus the manufacture of its own antifreeze



D为什么错了，而且C中in effect 是什么意思呢？

scarlett006

consider as已经不用了

scarlett006

B里面的legally修饰的应该是动词了不是原句修饰原句中consider illegally

scarlett006

第三句是不是说原句的意思是表示伴随结果而不是so that表目的？