题目内容
Artemisinin (青蒿素) was first________ by Chinese scientist Tu Youyou in the 1970s.
A.invented B.created C.produced D.discovered
练习册系列答案
相关题目
题目内容
Artemisinin (青蒿素) was first________ by Chinese scientist Tu Youyou in the 1970s.
A.invented B.created C.produced D.discovered