All tests require a potential candidate with whom (the tests) to compare DNA.
所有的测试都需要一个潜在的对象,从而可以将DNA与其比较。
例2:
He gave the same answer as (he had given) before.
他给出的答案和以前一样。
三、试题举例
However , it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when exposed to it often enough . (05,完型)