问题
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Lichens. probably the hardiest of all plants, live where virtually nothing else can---not
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It can be inferred from the last paragraph that______.A.planting trees can be very helpful
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Nearly any kind of plant of the forest understory can be part of a deers diet. Where the f
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FCC chairman decided to update the technology mainly becauseA.the NG911 system can help mo
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Which of the following is not mentioned as one of the roles the robots can play?A.Helpful
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The shoot system of perennials can help the plant
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