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THE AIR BECOMES UNPLEASANT WHEN WASTES ARE POURED...
THE AIR BECOMES UNPLEASANT WHEN WASTES ARE POURED INTO THE ATMOSP...
1000 CAU TRAC NGHIEM ANH 9
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326. The air becomes unpleasant when wastes are poured into the atmosphere. a. polite b. disagreeable c. friendly d. all are right
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326.
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1000 CAU TRAC NGHIEM ANH 9