there is _______ that cloning is ____ in some fields A.no doubt h_英语解答

there is _______ that cloning is ____ in some fields A.no doubt helpful B.not doubt useless
C.some doubtuse
D.any doubt

人气：139 ℃　时间：2020-04-20 05:10:34

解答

A 此句子意思为：毫无疑问,克隆对一些领域是有帮助的.