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【判断题】
能够用密度法来简单鉴别塑料种类是因为塑料的密度是一个唯一确定的值。A.
正确
B.
错误
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【判断题】Many students and s at workin the UK will have a "packed lunch", which only consists of a sandwich and a drink.
A.
正确
B.
错误
【简答题】附加题（阅读理解）。 Most young architects-particularly those in big cities-can only dream about working in a building of their own. And that dream come true often means finding a building no one else se...
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