问题
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The passage implies that voice sites______.A.cannot be used by those who don"t own a mobil
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For their own safety, household pets should be______to their own yard.A.confinedB.reducedC
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________(48)A.Often their own mothers who may be
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________(49)A.Often their own mothers who may be
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________(50)A.Often their own mothers who may be
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______( 47)A.To avoid being exploited mothers wit