单选题 The proper way to plan a scientific project is first to decide its goal and then to plan the best way to accomplish that goal. The United States space station project does not conform to this ideal. When the Cold War ended, the project lost its original purpose, so another purpose was quickly grafted onto the project, that of conducting limited-gravity experiments even though such experiments can be done in an alternative way. It is, therefore, abundantly clear the space station should not be built.
The reasoning in the argument is flawed because the argument

A、 attacks the proponents of a claim rather than arguing against the claim itself.
B、 presupposes what it sets out to prove.
C、 fruits planners for not foreseeing a certain event, when in fact that event was not foreseeable.
D、 contains statements that lead to a self-contradiction.
E、 (E) concludes that a shortcoming is fatal, having produced evidence only of the existence of that shortcoming.

【正确答案】 E

【答案解析】[解析] 本题的论证只是指出了其他方法的存在，就认为在空间站上进行有限重力实验缺乏目的性，从而做出不应该建设那个空间站的结论。由此分析可知(E)为正确答案。