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问题: I have no pens ---- no pencils

1. I have no pens ---- no pencils.
2. I have no pens ---- pencils.
A. and B. not C. no D.with

解答:

1. A, 这个很简答,no pens 和no pencils并列,i have是肯定性的。
2. X,这里四个都不对,应该是or。这里的并列的pens/pencils, 前面有个no, i have no是对后面所有的否定, 所以用or.

抛开语法,逻辑上来说
not (A or B)= (not A) and (not B)
not (A and B) = (not A) or (not B)