再请教一道题

lr081919

Dr. Tonegawa won the Nobel Prize for discovering how the body can constantly change its genes to fashion a seeming unlimited number of antibodies. each specifically targeted at an invading microbe or foreign substance.

(A)seeming unlimited number of antibodies, each specifically targeted at

(B)seeming unlimited number of antibodies, each targeted specifically to

(C)seeming unlimited number of antibodies, all specifically targeted at

(D)seemingly unlimited number of antibodies, all ofthem targeted specifically to

(E)seemingly unlimited number of antibodies,each targeted specifically at
Choices A, B, and C incorrectly use the adjective form seeming to modify the participial adjective unlimited. B also uses the unidiomatic preposition to instead of the correct at after targeted, while C violates sense by having all the antibodies specifically targeted at an, that is, one, invading microbe or substance. Choice D correctly uses seemingly, but it repeats B's incorrect use of targeted to and C's illogical all... specifically. Only E, the best choice, correctly uses the form seemingly to modify unlimited, the correct preposition, at, with targeted, and the logically correct each, which links the specific antibodies to
唯一不明白的地方是：each targeted specifically at这个clause怎么定性？是什么从句呢？target这里是主动还是被动？

lozouve

同问，帮你顶