取放CD唱片应手持边缘部分或中心孔,以防手指刮伤或弄脏碟面。()
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课堂教学结构是指课堂教学系统中教师、 学生、教学内容、教学媒体等要素之间的相互关系与联系的形式。()
The doctor kept him __ on a life-support machine
A. Tidy
B. Alive
C. Gentle
D. proud
The bank charges 6 per cent __ on all money borrowed from it.
A. Salary
B. Pay
C. Income
D. interest