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【判断题】
铸造合金固态收缩,是引起铸件产生缩的根本原因。A.
正确
B.
错误
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【单选题】—Peter looked tired and a little absent－minded at the meeting． —He _____ up too late．A．may stayB．
A.
30．—Peter looked tired and a little absent-minded at the meeting． —He _____ up too late． A．may stay
B.
could stay
C.
should have stayed
D.
must have stayed
【单选题】Which is right(正确的)?A． Frank is Peter's brother． B．Kevin and Peter are cousins．C
A.
30． Which is right(正确的)? A． Frank is Peter's brother．
B.
Kevin and Peter are cousins．
C.
Bruce and Frank are cousins．
D.
Ruth Collins is Peter's aunt．
【单选题】听力原文：M: I really can't understand why Peter isn't here yet. We agree to meet at 8:30. It's almost 9:00. Do you think we should leave for the airport? W: He probably got into some trouble with the traf...
A.
Leave for the airport.
B.
Look for Peter.
C.
Remove the trouble for Peter.
D.
Wait a little longer.
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