单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A) A detective story. C) Professor Wilson’s writing course.
B) Their writing assignment. D) A jewelry store robbery.
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单项选择题
What is the most suitable substitute for a desperate echo in Paragraph 2
A) An enthusiastic imitation.
C) A destructive return.
B) A risky repetition.
D) An insane cry.
单项选择题
What does the last paragraph indicate
A．Source-code shouldn’t be firmly controlled.
B．The software market is tending to be diversified.
C．Microsoft will release more source-code.
D．Software market is contracting.
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