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【单选题】
污染物控制标准是为了实现环境质量目标，结合经济技术条件和环境特点，对排入环境的或所作的控制规定。A.
污染物，可持续污染物
B.
有毒元素，有害物质
C.
污染物，有害因素
D.
有害物质，有害因素
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皮皮学刷刷变学霸
举一反三
【单选题】Maybe it's just that Blue Monday feeling.
A.
可能那刚刚是“忧郁的星期一”的感觉吧。
B.
可能那刚好是“蓝色星期一”的感觉吧。
C.
可能那只是“忧郁的星期一”的感觉吧。
D.
可能那刚刚是“蓝色星期一”的感觉吧。
【简答题】第二周学结
【简答题】你就原谅我这一次吧,我以后一定 ,不会再犯这种错误。
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【简答题】I often get asked if I think I'm ever going to build something useful, and maybe someday I will. But the way I see it, I already have because I've built myself this job and it's something that I could...
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【单选题】听力原文：The name just doesn't ring a bell with me, maybe it's the first time we meet Michael. (25)
A.
I don't recognize that name.
B.
I haven't called Michael.
C.
That doorbell doesn't work.
D.
I didn't ring the bell.
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