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【简答题】
质量为m=6kg的物体，当t=0时，从x=0处自静止开始沿x轴运动，在力Fx=3+4xN作用下运动了3m，若不计摩擦，则此时物体的速度为： m/s。（答案用整数表示）
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A.
The manager asked him to do many important things.
B.
He likes his job. But he has to work overtime.
C.
He likes his job so much that the manager will give him a promotion.
D.
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A.
可数名词单数
B.
可数名词复数
C.
不可数名词
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A.
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B.
1型与II型患病年龄没有区别
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E.
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A.
he was once an assistant at the Royal Court Theatre.
B.
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C.
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D.
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