Itneveroccurredtohumansuntilthemid1990s
问题详情:
It never occurred to humans until the mid1990s ________ some animals can be cloned.
A.where B.that C.which D.what
【回答】
B
知识点:连词
题型:选择题
问题详情:
It never occurred to humans until the mid1990s ________ some animals can be cloned.
A.where B.that C.which D.what
【回答】
B
知识点:连词
题型:选择题