题目内容
It's said that the emperor Shen Nong tea when he was boiling water.
[ ]
A. was discovered
B. discovered
C. was discovering
D. discovers
B. discovered
C. was discovering
D. discovers
B
练习册系列答案
相关题目
It’s said that scientists have ________ a way to deal with the serious disease
| A.caught up with | B.come up with |
| C.agreed with | D.compared with |