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【判断题】
纸质滤油器可以清洗,无需经常更换滤芯。( )A.
正确
B.
错误
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举一反三
【单选题】He actually didn't see the man ______ the room, but he heard them ______ in it.
A.
to enter, laugh
B.
enter, to laugh
C.
to enter, laughing
D.
enter, laughing
【单选题】下列关于碳酸盐热稳定性顺序正确的是 。
A.
铵盐 > 过渡金属盐 > 碱土金属盐 > 碱金属盐
B.
碱金属盐 > 碱土金属盐 > 过渡金属盐 > 铵盐
C.
碱土金属盐 > 碱金属盐 > 铵盐 > 过渡金属盐
D.
过渡金属盐 > 碱土金属盐 > 碱金属盐 > 铵盐
【简答题】A．She was afraid of the professor. B．She didn't enter her house. C．She didn't make full preparations for her lessons. D．She lost her key.
【简答题】( )的备用方式通常分为明备用和暗备用两种。
【单选题】–Hi, Kate! --Hi, Mary. I ______ you are here.
A.
don’t know
B.
don’t think C, think D. didn’t know
【单选题】They didn't discover until they happened to enter the back room ______ someone had stolen the priceless painting. [ ]
A.
that
B.
what
C.
which
D.
when
【单选题】The writer was so ______ on her work that she didn’t notice him enter the room
A.
absorbed
B.
abandoned
C.
focused
D.
concerned
【简答题】( )的备用方式通常分为明备用和( )备用两种。
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