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【单选题】
空气污染指数的范围从0到500,其中50对应于我国《环境空气质量标准》中的()的污染物平均浓度限值A.
一级标准
B.
二级标准
C.
三级标准
D.
四级标准
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皮皮学刷刷变学霸
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【单选题】听力原文：W: Excuse me, Professor Anderson. I was absent from the last class and I heard that's when you handed out the course outline. Do you have an extra copy? M: I don't have anyone with me now. But th...
A.
She will be absent in the next class.
B.
She will help the professor hand out the course outline.
C.
She will copy the outline by herself.
D.
She will go to the office of the professor.
【单选题】( )是编制全面预算的出发点,也是日常业务预算的基础。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
销售预算
B.
生产预算
C.
财务预算
D.
现金预算
【单选题】---Do you know what Lily is doing? --- She _______ in the office by a reporter from WWF.
A.
is interviewed
B.
was interviewed
C.
was being interviewed
D.
is being interviewed
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