皮皮学，免费搜题
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【简答题】
A．They should help maintain the equipment. B．They should teach their children how to use the equipment. C．They should stop their children from climbing ladders. D．They should keep a watchful eye on their children.
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举一反三
【简答题】A．A book about computer programming. B．A book about computer science. C．A book about natural science. D．A book about physics.
【单选题】This is ______ a German book ______ an English book. It's a French book. [ ]
A.
either; or
B.
not only; but also
C.
both; and
D.
neither; nor
【简答题】( )看演出时,应衣着整洁、得体,不能穿背心、短裤、拖鞋等,如果戴着帽子应主动摘下。
【简答题】A．The book was hard to find. B．The book cost too much money. C．The book was difficult to read. D．The book was not worth reading.
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