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【多选题】
下列水环境污染防治措施中属于提高和充分利用水体自净能力的方式有（ ）A.
清洁生产
B.
人工复氧
C.
建立污水处理厂
D.
河流流量调节
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】P档和自动档有什么区别?
【单选题】____________, they immediately left the house.
A.
Being heard the noise
B.
Hearing the noise
C.
They heard the noise
D.
They were hearing the noise
【简答题】如果A1单元格内容为”3”,B1单元格内容为TRUE,则=SUM(A1,B1,2)=_______。
【简答题】Language, moreover, is a very public behaviour, so it is easy for different usages to be ______and ______.
【单选题】Moreover, the underlying message is that the family's language is not important.
A.
native
B.
intelligent
C.
direct
D.
chief
【单选题】Hearing the noise, all the birds flew ___every direction.
A.
in
B.
on
C.
to
D.
toward
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