A.磁体具有吸引轻小物体的性质
B.磁体总是同时存在两个磁极
C.同名磁极相吸,异名磁极相斥
D.地理的北极就是地磁的北极
答案:B
某班抽取6名同学参加体能测试,成绩(单位:分)如下:85,95,85,80,80,85.下列表述错误的是 [ ]
A.众数是85
B.平均数是85
C.中位数是80
D.极差是15
We were all very much attracted by the beautiful scenery________we set foot in the village. [ ]
A. quickly
B. suddenly
C. finally
D. immediately