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【单选题】
While we’re developing agriculture and industry, we must prevent the earth___.A.
from polluting
B.
polluted
C.
polluting
D.
being polluted
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反馈参考答案：
举一反三
【单选题】台阶与建筑出入口之间的平台一般深度不应( )且平台需做( )的排水坡度。
A.
小于800mm，5%
B.
小于1500mm，2%
C.
小于2500mm，5%
D.
小于1000mm，2%
【单选题】-Did Nancy come for the meeting last night? -No.She was so tired that she soon_____in her room.
A.
fell behind
B.
fell off
C.
fell asleep
【单选题】—Did Nancy come for the meeting last night? —No. She was so tired that she soon ______ in her room.
A.
fell behind
B.
fell asleep
C.
fell off
相关题目：
【单选题】台阶与建筑出入口之间的平台一般深度不应( )且平台需做( )的排水坡度。
A.
小于800mm，5%
B.
小于1500mm，2%
C.
小于2500mm，5%
D.
小于1000mm，2%
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