Itneveroccurredtohumansuntilthemid1990s
問題詳情:
It never occurred to humans until the mid1990s ________ some animals can be cloned.
A.where B.that C.which D.what
【回答】
B
知識點:連詞
題型:選擇題
問題詳情:
It never occurred to humans until the mid1990s ________ some animals can be cloned.
A.where B.that C.which D.what
【回答】
B
知識點:連詞
題型:選擇題