题目
A.have been working
B.be working
C.be worked
D.work
第1题
A.55%KNO₃+45%NaNO₂
B.55%KNO₃+45%NaNO₃
C.50%KNO₃+47NaNO₂+3%H₂O
D.50%KNO₃+50%NaNO₂
第4题
A、Who are you?
B、I’m Parker.
C、Don’t you kno w me?
D、This is Parker.
第5题
A.7%KNO3,40%NaNO2,53%NaNO2
B.7%NaNO2,40%NaNO3,53%KNO3
C.7%NaNO3,40%KNO3,53%NaNO2
D.7%NaNO3,40%NaNO2,53%KNO3
第6题
A.She’s very intelligent
B.She’s very attractive
C.She’s very easygoing
D.She’s very special
第7题
A.ever know
B.ever knew
C.have ever known
D.are knowing
第9题
A.I’m sure you will.
B.I’m afraid not.
C.No one knows.
D.I don ’t hope so.
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