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MANY SOURCES OF WATER ARE NOT DRINKABLE BECAUSE OF...
MANY SOURCES OF WATER ARE NOT DRINKABLE BECAUSE OF………. A. INDUSTRI...
DE KIEM TRA TIENG ANH 11
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42. Many sources of water are not drinkable because of………. A. industrial pollution B. acid rain, industrial pollution and garbage C. acid rain D. garbage
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42.
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DE KIEM TRA TIENG ANH 11