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【单选题】
请选择该建筑物室内外高差正确的一项( ) 。A.
0.030M
B.
0.300M
C.
0.420M
D.
0.450M
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反馈参考答案：
举一反三
【单选题】Mary enjoys ______ in the evening. [ ]
A.
to play the piano
B.
to play piano
C.
playing the piano
D.
playing piano
【单选题】Danny is playing and Tom is playing . [ ]
A.
piano, football
B.
a piano, a football
C.
piano, the football
D.
the piano, football
【单选题】Let's go and play ________ at the party. [ ]
A.
piano
B.
a piano
C.
pianos
D.
the piano
【单选题】After having _______ super, she played _______ piano for half _______ hour.
A.
/ ; / ; a
B.
the; the; an
C.
the; / ; a
D.
/ ; the; an
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