问题
选择题
He slipped and broke his leg. _____, he’ll have to be away from school for two or three months.[ ]
A. As a result
B. On the other hand
C. Above all
D. However
答案
答案：A
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He slipped and broke his leg. _____, he’ll have to be away from school for two or three months.[ ]
A. As a result
B. On the other hand
C. Above all
D. However
答案：A
做离心运动时，运动轨迹的形状（ ）