题目内容
This washing machine factory has introduced a very unusual technological innovation making the job of housewives easier. ( )
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Amy Chua’s book Battle Hymn (赞美诗) of the Tiger Mother created a significant impression when it was published in 2011. ( )
Of all the things my grandma used to say, I remember this best of all - everything you worry about will prove to be all right. ( )
Every year a report comes out describing fully which cities in America had the highest crime (犯罪) rates from the previous year. ( )
正弦交流电的三要素指的是（）。
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