9.     Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun’s poles or equator.

(A) are visible as dark spots on the surface of the Sun but have never been sighted on

(B) are visible as dark spots that never have been sighted on the surface of the Sun

(C) appear on the surface of the Sun as dark spots although never sighted at

(D) appear as dark spots on the surface of the Sun, although never having been sighted at

(E) appear as dark spots on the Sun’s surface, which have never been sighted on

C     Although typically introduces a subordinate clause, which has a subject and a verb, but here there is no subject and sighted is not a complete verb

D     Although usually introduces a subordinate clause, but there is no subject of the clause and having been sighted is not a complete verb phrase

158. With only 5 percent of the world's population, United States citizens consume 28 percent of its nonrenewable resources, drive more than one-third of its automobiles, and use 21 times more water per capita than Europeans do.
(A) With
(B) As
(C) Being
(D) Despite having
(E) Although accounting for

答案E

鄙人感觉 连词+ 分词 的形式 是可以出现的, 做状语修饰 整个句子

所以请问 C D 2项错在什么地方?   要想把它们改对的话 要怎么表达? 

although 后面的 分词 用  现在分词还是过去分词 是由什么决定的? 逻辑主语吗? 
 

158. With only 5 percent of the world's population, United States citizens consume 28 percent of its nonrenewable resources, drive more than one-third of its automobiles, and use 21 times more water per capita than Europeans do.
(A) With
(B) As
(C) Being
(D) Despite having
(E) Although accounting for

答案E