问题
选择题
Picking apples is _____ than having class.[ ]
A. many better
B. much good
C. much better
D. more good
答案
答案：C
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Picking apples is _____ than having class.[ ]
A. many better
B. much good
C. much better
D. more good
答案：C
AO，则图中A、B两点的坐标各是多少？环从A到B的过程中，位置变化了多少？ 