题目内容
It is believed that ______ European chemist called Felix Hoffmann first produced ASA which completely changed ______ man’s understanding of aspirin.
A. an; a B. the; a C. a; / D. an; /
C
解析:
略
练习册系列答案
相关题目
题目内容
It is believed that ______ European chemist called Felix Hoffmann first produced ASA which completely changed ______ man’s understanding of aspirin.
A. an; a B. the; a C. a; / D. an; /
C
略