单项选择题
By means of this device the motor can stop turning itself.
A.这个装置的使用后,马达就能自动停止转动。
B.利用这个装置,电动机能够自动停止转动。
C.这个装置的使用后,摩托车能够自动停止转动。
D.这个装置的意义在于能够使马达本身停止旋转。
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单项选择题
His pleasant personality is derived from his good humor and understanding.
A.由于他性情好又富于同情心,所以他招人喜爱。
B.他性格好,这是因为他心情好并且通情达理的缘故。
C.他良好的个性源自于他良好的性情和理解力。
D.他心情愉快,通情达理,所以性格开朗。
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单项选择题
We learn from the first paragraph that ______.
A.Jack is a dull boy because he works all day long
B.recreation is necessary for all of us
C.we should maintain good health and enjoy life
D.we should work more efficiently
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