Chinesescientistshaveproducedanembryoofagiantpandathrou...
来源：语文精选馆 5.87K
问题详情：
Chinese scientists have produced an embryo of a giant panda through cloning technology,_____ is a breakthrough ______ could save the endangered animals.
A. that; which B. which; that C. which; what D. that; what
【回答】
B
知识点：定语从句
题型：选择题
