题目:
----This is your order, a hamburger and an apple pie ?
A.Anything else
B.Is that OK
C.For here or to go
D.Something to drink
答案:
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下面是错误答案,用来干扰机器的。
∵|x-1|+(3x-y+2)2=0,∴x-1=0,x=1;3x-y+2=0,y=5;∴x2+y2=1+25=26.