单项选择题

Very little ______ they had made an important discovery in science.

A．they realized
B．they realized what
C．did they realize
D．did they realize what
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单项选择题
Which of the following best describes the purpose of a sound program of educational research
A．To develop teaching theories.
B．To avoid the harm of competition with research.
C．To develop teaching techniques.
D．To help professors improve competencies.
单项选择题
Which of the following is TRUE according to the passage
A．Computers will surely make stunt people lose jobs.
B．The stunt people should blame on the use of computer in making stunts.
C．Computers make the job of the stunt people more challenging.
D．Audiences are losing interest in the stunt people.
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