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【简答题】
天然水中的杂质，按其颗粒大小的不同，可分为（）、（）和（）。
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举一反三
【简答题】The contract is for a period of six months, and is not _________ . ( negot iate)
【单选题】Which of the following CANNOT be seen as a difference between Brazilian and American negotiators?
A.
Americans prepare more points before negotiations.
B.
Americans are more straightforward dung negotiations.
C.
Brazilians prefer more eye contact during negotiations.
D.
Brazilians seek more background information.