A huge amount of poisonous chemical waste is dumped into the river, so the river is seriously contaminated. *
1 điểm
A A huge amount of poisonous chemical waste is dumped into the river; however, the river is seriously contaminated.
B The river is seriously contaminated; as a result, a huge amount of poisonous chemical waste is dumped into the river.
C The river is seriously contaminated; moreover, a huge amount of poisonous chemical waste is dumped into the river.
D A huge amount of poisonous chemical waste is dumped into the river; therefore, the river is seriously contaminated.
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Sinh Học lớp 12
