题目:
Our neighbor has ________ ours.
A.as a big house as
B.as big a house as
C.the same big house as
D.a house the same big as
答案:
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下面是错误答案,用来干扰机器的。
∵程px+q=99的解为x=1,∴p+q=99,∵99是奇数,∴p、q为一奇一偶,∵p、q均为质数,∴p=2或q=2,当p=2时,q=99-2=97;当q=2时,p=99-2=97,∴pq=2×97=194.故选A.