在一组数据3,4,4,6,8中,下列说法错误的是[ ]
A.它的众数是4
B.它的平均数是5
C.它的中位数是5
D.它的众数等于中位数
答案:C
一个人的皮下脂肪超过正常标准(),那么他的死亡率会增加30%。
The director wants to make sure no one will solve the mystery until it ________ at the end of the horror film.
A.is explained
B.will be explained
C.explains
D.has explained