问题
选择题
It's said that the emperor Shen Nong tea when he was boiling water. [ ]
A. was discovered
B. discovered
C. was discovering
D. discovers
答案
答案：B
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It's said that the emperor Shen Nong tea when he was boiling water. [ ]
A. was discovered
B. discovered
C. was discovering
D. discovers
答案：B