题目

This school is different     others. It has many out-of-class activities.A.off B.from C.of D.for 答案:B解析:考查短语be different from用法,意为“和……不同”。 圆C1:(x-1)2+(y+2)2=16与圆C2:(x-2)2+y2=1的位置关系是 [  ] A. 内含 B. 内切 C. 相交 D. 外切
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