问题
选择题
The farmers grow some ______ here. [ ]
A. rices
B. carrot
C. tomatoes
D. milk
答案
答案：C
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The farmers grow some ______ here. [ ]
A. rices
B. carrot
C. tomatoes
D. milk
答案：C
，正电荷
，正电荷
，负电荷
，负电荷