皮皮学，免费搜题
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搜题
【多选题】
制粉系统的主要任务是（ ）。A.
煤粉的磨制
B.
着火前的预热
C.
煤粉干燥
D.
煤粉运输
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—Did you play cards yesterday? —________ [ ]
A.
Yes, I play cards with my friends.
B.
Yes, I played cards with my friends.
C.
Yes, I am playing cards with my friends.
【简答题】_______play in the street! A car may hit you.
【单选题】Let Jim play with your toy car as well, Peter. You must learn to ______.
A.
help
B.
share
C.
care
【简答题】A．Sleep at the campground. B．Play a card in their car. C．Return home after the rain stopped. D．Stay at a hotel at the foot the mountain.
【单选题】We'd better _______on the road. A car may hit us.
A.
not to play
B.
not play
C.
to not play
D.
don't play
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