单项选择题

The word "streamline" in the second paragraph probably means ______.

A．strengthen.
B．simplify.
C．ascertain.
D．subvert.
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单项选择题
It can he inferred from the first paragraph that the author ______.
A．is in favor of stem-cell research.
B．welcomes the research slowdown.
C．takes a neutral stand on the research.
D．thinks it essential to speed up the research.
单项选择题
Which of the following statements about the research is TRUE
A．Some researchers are dubious of the feasibility of the research.
B．Private enterprise doesn't show the interest in the research.
C．There should be a balance between caution and audacity.
D．Many researchers have given up their research.
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