单项选择题

Competition for third-world producers should（）a more efficient use of resources in rich economies, so increasing productivity growth.

A. generate
B. formulate
C. irritate
D. stimulate

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单项选择题
（35）（）

A. publicity
B. penalty
C. popularity
D. peculiarity
单项选择题
In the past twenty years, he has （）great wealth by hard work.

A. asserted
B. undertaken
C. recollected
D. accumulated
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