题目

The most frightening words in the English language are, “Our computer is down.” You hear it more and more when you are on business. The other day I was at the airport waiting for a ticket to Washington and the girl in the ticket office said, “I’m sorry, I can’t sell you a ticket. Our computer is down.” “If your computer is down, just write me out a ticket.” “I can’t write you out a ticket. The computer is the only one allowed to do so.” I looked down on the computer and every passenger was just standing there drinking coffee and staring at the black screen. Then I aske 命题p：若a、b∈R，则|a|＋|b|＞1是|a＋b|＞1的充分而不必要条件，命题q：函数y＝的定义域是(－∞，－1]∪[3，＋∞)，则 [　　] A． “p或q”为假 B． “p且q”为真 C． p真q假 D． p假q真