选择题:Tom ______ to America with his parents. They_____

题目内容:
Tom ______ to America with his parents. They_____ back in two weeks.( )(本题1.0分)

A、 have gone; will come
B、 has gone; will come
C、 have been; have come
D、 have been; come
参考答案:

某项政策实施前,基尼系数为0.68,该政策实施后,基尼系数为0.72,所以说该政策的实施有助于实现收

某项政策实施前,基尼系数为0.68,该政策实施后,基尼系数为0.72,所以说该政策的实施有助于实现收入分配平等化。A、正确B、错误

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用于游泳池、公路接缝,密封性能好的密封材料是( )。A、沥青嵌缝油膏B、丙烯酸类密封膏C、聚氨酯密封

用于游泳池、公路接缝,密封性能好的密封材料是( )。A、沥青嵌缝油膏B、丙烯酸类密封膏C、聚氨酯密封膏D、聚氯乙烯接缝膏

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