题目内容

伞形滚圆机工作时,受螺旋导槽和伞形转体的挤压与摩擦搓揉作用,面团被搓圆并从伞形转体上部滚出。()

A. 对
B. 错

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Listen! Who _______ in the classroom now?

A. sing
B. is singing
C. to sing
D. sings

Don't talk loudly,please. Grandparents _________ in the dormitory at the moment.

A. slept
B. sleeping
C. are sleeping
D. sleep

I see her ____ the room this morning.

A. to enter
B. entered
C. enter
D. enters

You’d better ______ at home and ______ your homework.

A. to stay, do
B. stay, do
C. to stay, to do
D. stay, to do

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