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Dr. Tonegawa won the Nobel Prize for discovering how t he 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 of them specifically targeted to e. seemingly unlimited number of antibodies, each targeted specifically at 答案选E，虽然说其他的都比E还错误，但是E中each引导独立主格，这个题里应该是主动关系吧，each后面怎么怎么是targeted不是targeting呢？ | 
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发表于 2009-5-5 21:22:00
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