( ) of the rivers here have been polluted. ( ) of the rivers here have been polluted.
Two-thirds
举一反三
- Many lakes and rivers ________ by industrial waste. A: A have polluted B: B have been polluted C: C had been polluted D: D has been polluted
- Many lakes and rivers have been ________by industrial waste. A: pollutes B: polluted C: pollution
- Lakes, rivers and underground water supplies have all been badly polluted by lightly regulated industry.
- Many lakes and rivers have been( )by industrial waste. A: damaged B: injured C: polluted D: destroyed
- Many lakes and rivers have been ________by industrial waste. A: polluting B: ruined C: crashed D: polluted
内容
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Many lakes and rivers have been ( )by industrial waste. A: public B: put C: polluted D: pollutE
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5. Many lakes and rivers have been ________by industrial waste. A: smog B: pollution C: polluted D: smoging
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Our rivers are running dry or being polluted. If we go on ignoring this, the consequences (后果) will not be hard to predict.改写为：If we go on ignoring our rivers are running dry or being polluted, the consequences will not be hard to predict.
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If we had taken such effective measures much earlier, the river _____ so seriously now. A: is not polluted B: would not be polluted C: had not been polluted D: would not have been polluted
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Many lakes and rivers have been___by industrial waste. A: polluted B: polluting C: pollute D: to pollute