某混凝土预制构件厂,秋季(气温15℃左右)生产普通水泥混凝上大梁,设计强度等级为C25,要求大梁混凝土必须达到设计强度70%方可起吊堆放.估汁需养护几天以后就可起吊?
第1题
A. through
B. around
C. into
D. for
第2题
第4题
When he caught a _______ of his girl-friend in the rain, Jack asked the taxi driver to stop to pick her up.
A、harbour
B、kettle
C、glimpse
D、scale
第5题
When Taz asked his question, Roger ______.
A.thought he knew the right answer
B.pretended not to know the right answer
C.admitted at once that he did not know the right answer
D.deliberately gave a stupid answer
第6题
第7题
When he was asked how many letters he received yesterday, his reply was_______.
A.No one
B.None
C.Nothing
D.Not many ones
第8题
Where was the old man when he was asked?
A.On his way home.
B.In the village.
C.At home.
第9题
When he discovered who had written the letter to his mother, the soldier______.
[A] was filled with great surprise
[B] recognized Lincoln at once
[C] asked Lincoln who he was
[D] asked Lincoln to hold his hand
第10题
The little boy was on the ______ of tears when his teacher asked him what he had done.
A.verge
B.fringe
C.margin
D.rim
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