Certain groups oppose stem-cell research because______.
A. it is costly and dangerous
B. it would expand the powers of the government
C. it may spread diseases
D. they oppose the use of aborted fetuses
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In Paragraph 5, the author discusses that______.
A. the wage rises over the past 2 decades could be offset by rising production
B. foreign enterprises should switch their manufacturing to cheaper sources
C. if labor costs continue would ripple through the economy
D. average wages grow 19 percent from 2005 to 2010
The main purpose of paragraph 4 is to______.
A. reiterate the argument that economics is not a short-sighted science
B. summarize the preceding argument presented in the text
C. state the concept of game theory"s application to economics in a condensed version
D. lead the reader to a conclusion supported by the author
____是幼儿园为实现一定的幼儿园的教育目标，将年龄相同、发展水平大体相同的幼儿按一定的人数规模建立起来的教育组织。
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