Once harm is _______ to the eco-system, all species will ________, including man
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Once harm is _______ to the eco-system, all species will ________, including man himself. | A．made; be in danger | B．done; be dangerous | | C．caused; be endangered | D．done; be in danger |
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答案
| D |
解析
| 第一空短语do harm to 对…有害；第二空短语in danger处于危险中。 一旦做了对生态有害的事情所有的物种包括人类自己会处于危险中。选D |
举一反三
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