[讨论]cr need hot discussion!!(source: a 01-21 jj from aba8)
cr: a drug can be used to some cancer. Since this cancer is less common, to test this drug, a large number of people will be used and therefore many people will suffer the adverse side effect of this drug. Ask the assumption:
some choices are little confusing:
1. the people who are very likely to contract this cancer is hard to identify in advance.
2. drug test must employ a large number of people in order to be effective
3. drugs that can be effective to some cancer have adverse side effect
I chose 3 but not very sure.
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my opinion: 1
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cr: children who are allergic to some chemical used in school are sent to the nurse office more than ten years ago. Therefore, it must because the chemical is used more or because children are more vulnerable to this chemical than ten years ago. Ask assumption.
I chose children who get allergic now are more likely to be sent to nurse office than ten years ago.
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my opinion: do not agree the original choice
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cr: some school offers on-line course as well as traditional course. If take a withdrawal as a failure for the course, the grade of these two kinds of course are almost the same on average. Ask what must be true:
I chose the students enrolled in the online course who did not withdraw did better, on average, than students enrolled in traditional course.
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The question is hard to understand. Who can help me to explain it?
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