单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．They have to finish it quickly.
B．They have to use what they have.
C．They have to work hard and do their best.
D．They must redo the project and hope it improves.
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单项选择题
Which of the following statements can we know from the fourth paragraph
A．Distinguished professors at research universities should focus on research only.
B．The separation of teaching from research may affect the quality of future scientists.
C．It is vitally important to improve teaching in elementary schools in order to train new scientists.
D．It is impossible to combine research with teaching due to the rapid development of modern science.
单项选择题
The dramatic increase of land value in cities ______ .
A．is a desirable result of economic development
B．brings about greater opportunities for land dealers
C．lead to an efficient, positive use of land in the form of vertical growth
D．is annoyingly artificial and meaningless
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