1.What is the topic of the passage?
2.Where was ice used after the Civil War?
3.What was essential to a science of refrigeration according to the passage?
4.It can be inferred from the passage that the theoretical foundation of ice box should be that____________.
5.Without an ice box,farmers had to go to the market at night because_______.
The Change of Idols 偶像的改变
国内英语资讯:650,000 traffic police officers dispatched during May Day holiday
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运动带来的快乐大于加薪
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微信好友2k+的人是怎么管理自己社交圈的?
国内英语资讯:Gansus trade with Belt and Road countries up 6 pct in Q1
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男性应该使用感性的表情符号吗?
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为何信笺纸是黄色的?
国际英语资讯:41 people confirmed dead in plane fire in Moscows airport
上班不过坐着动动手指,为什么还是这么累?
体坛英语资讯:Home stars suffer early exit at Asian Badminton Championships
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“准时”这件事,在不同国家的含义差别竟然这么大!