LSAT考试逻辑推理练习题（9）

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18.No senator spoke at the convention unless he or she was a Democrat.No Democrat both spoke at the convention and was a senator

Which one of the following conclusions canbe correctly drawn from the statements above?

(A) N one but senators spoke at theconvention.

(B) No Democrat spoke at the convention.

(C) Only Democrats spoke at the convention.

(D) No senator spoke at the convention.

(E) Some Democrat senators spoke at theconvention.

19.If Sarah were a concert pianist for a major orchestra, she would befamous. She is not a concert pianist since she is not famous.

The conclusion above is unsound because theauthor does not consider that

(A) Sarah could be a famous actress.

(B) Sarah could be a harpist for a majororchestra.

(C) Sarah could be a pianist with a rockgroup.

(D) Sarah could be a concert pianist with aminor orchestra.

(E) Sarah could be famous for anotherreason.

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