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【判断题】
如果贝克汉姆在剪草坪上的机会成本是1万美元,汤姆在剪草坪上的机会成本是20美元,则汤姆在剪草坪上有比较优势。A.
正确
B.
错误
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【简答题】I am trying to lose weight. I'll have a _____, please. ( book, funny, luxury, price, path, contain, interview, mall, discount, parking, salad, hurry, diner, canceled, usual, cash , tired )
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【简答题】Omitting whatever can be omitted without change of meaning. Thales thought water was the beginning of everything; Anaximenes thought air was the beginning of everything; Heraclitus thought fire was t...
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