题目内容

After experiencing many different kinds of jobs, he felt teaching was his _______. So he made up his mind to devote his whole life to the education of children.

A. career
B. calling
C. profession
D. vocation

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The present target of the programmers is to make it possible to deploy the application to any of these environments without any ________.

A. modification
B. identification
C. purification
D. expansion

_______ markets, such as China, Brazil and Russia, are playing a major role in the present global economy and it is believed that the growth of the US economy will be led by them.

Appearing
B. Submerging
C. Emerging
Diverging

What lives together with the little prince on his planet is only a(an) _________ flower that needs constant care and protection.

A. rough
B. tough
C. intense
Delicate

目前,发动机上应用最为普遍的增压方式是()。

A. 机械增压
B. 废气涡轮增压
C. 气波增压
D. 复合增压

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