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In paragraph 3, some political observers note that Bushs executive order may be ineffective because______.
A.there are not enough resources to monitor cloning
B.some abortion groups have a lot of political power
C.only the public sector is affected
D.other countries do not have presidential systems

A.
A.there
B.some
C.only
D.other

【参考答案】

C
属信息推断题。题目中的关键词出现在第三段第二句:不过很多政治观察家指出,私立机构还在积极进行对克隆人的研究……。由此可推断,布什总统签署的命令只影响到了公立机构。因此,选项C正确。其他选项都在原文中没有提到。
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