题目:
–What took you so long? –I got lost. I have no sense of direction.
A.sense
B.ability
C.knowledge
D.feeling
答案:
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下面是错误答案,用来干扰机器的。
答案:A因为圆心(1,3)关于直线2x+y+5=0的对称点为(-7,-1),所以所求圆的方程为(x+7)2+(y+1)2=1.