If a grandma is willing to look after her grandkids, she should be ______.
A. encouraged
B. kept at home
C. given breaks
D. paid
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听力原文:M: Is this the Eastern Airline check-in?
W: Yes. Can I see your ticket, please?
Where does the conversation probably take place?
At the bus station.
B. At a train.
C. At the airport.
【B19】
A. as
B. next time
C. since
D. so long as
如果r和t都大于0,现值利率因子PVIF(r,t)永远都大于0。()
A. 正确
B. 错误
金价与美元价格、股票等投资品种的走势呈正相关性。()
A. 正确
B. 错误