In the international market, goods on sale coming from different countries and suppliers are always facing keen competition.
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In order to be a good scientist, ______.
A. mathematics is urgent
B. one should have the mathematics
C. one must understand mathematics
D. mathematics is important to understand
Low price at Willable & Ward is only （）.
14（）
A. receiving
B. accepting
C. having
D. refusing
The special design lies in three （） pockets and seven inside or hidden pockets.
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