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Shopping habits in the United Stateshave changed greatly in the last quarter of the 20th century.
1年前
It's______ colder today than it was yesterday.
1年前
There is _________ news about this movie star in the newspaper. Where can I get some? [ ]
1年前
1年前
甲、乙两列火车的长为144m和180m,甲车比乙车每秒多行4m.两列火车相向而行,从相遇到全部错开需9s,问两车的速度各是多少?
1年前