问题
选择题
Don't try to persuade your boss, he won't have the of employing me-a fresh student. [ ]
A. intention
B. attention
C. sense
D. attraction
答案
答案：A
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Don't try to persuade your boss, he won't have the of employing me-a fresh student. [ ]
A. intention
B. attention
C. sense
D. attraction
答案：A
，求细线断裂时小球所受到的合冲量是多少？