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A replacement or () if you are not satisfied.

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In the international market, goods on sale coming from different countries and suppliers are always facing keen competition.

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

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