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【单选题】
关于使用生石灰配制建筑砂浆会产生的问题，说法正确的是（ ）。A.
硬化时会体积收缩
B.
浆液容易析水
C.
不宜用于干燥的环境
D.
原料需要有长期储存过程
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举一反三
【单选题】Why did Peter's mother call the Office of Students' Affairs?
A.
To arrange for some activities for Peter.
B.
To complain about Peter's rommmate.
C.
To introduce Peter to the staff there.
D.
To find out why Peter feels unhappy.
【简答题】请简述MTO的含义、责任和经营的范围
【简答题】Why not your teacher for help? A to ask B ask C asking D asks
【单选题】--My father ___________ a letter yesterday, but I’m not sure if he has finished it. ---Why not ask him about it ?
A.
wrote
B.
was writing
C.
has written
D.
writes
【单选题】I can always ask Peter for help if I have problems. He is _____. [ ]
A.
friendly
B.
hard-working
C.
helpful
D.
funny
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