题目内容

Universities have offered ________ business courses to respond to students' demands for more business knowledge.

A. . optional
B. . conservative
C. . voluntary
D. . temporary

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The stock price fluctuations have sparked the investor’s concern about insider trading and market ________.

A. . transaction
B. . management
C. . manipulation
D. . treatment

AIDS has become one of the first killers to human beings. Despite their lack of success so far, scientists have ________ in their research for a cure for AIDS.

A. . suspended
B. . retained
C. . insisted
D. . persevered

Since the safety issue for school children has become more concerned by the public, in certain countries the law ________ parents to send their children to school.

A. . obliges
B. . conforms
C. . imposes
D. . submits

The politician was very skillful in persuading people, but this time people criticized him with severe comments as his speech was confusing and full of ________.

A. . contrary
B. . conflicts
C. . contrasts
D. . contradictions