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    This factory produced much dirty water, which resulted in a wide______of environmental problems．

    A．branchB．range

    C．speciesD．wave

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    6.A. Or B. And C. So D. But

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    8.A. delicious B. fresh C. proper D. fancy

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    Dear friends,

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    1.A．wounded B．moved C．trembled D．dragged

    2.A．step B．feet C．speech D．body

    3.A．away B．together C．asleep D．apart

    4.A．losing B．failing C．disappearing D．rising

    5.A．food B．pan C．milk D．dinner

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    7.A．After B．Since C．While D．When

    8.A．small B．safe C．big D．wooden

    9.A．glanced at B．stared at C．looked through D．looked after

    10.A．However B．Otherwise C．Still D．Rather

    11.A．comments B．quarrels C．warnings D．remark

    12.A．in silence B．in advance C．in danger D．in charge

    13.A．researched B．noticed C．searched D．explored

    14.A．firmly B．suddenly C．cruelly D．sweetly

    15.A．bowl B．cup C．spoon D．pan

    16.A．worship B．work C．whisper D．weave

    17.A．impressed B．touched C．confused D．struck

    18.A．speechless B．homeless C．fearless D．hopeless

    19.A．Once B．Whether C．Though D．Unless

    20.A．gently B．happily C．fluently D．fortunately

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