题目

Which is the man’s favourite animal?A. B. C. 答案：【答案】A【解析】W: Tom , What animals do you like best?M: I love many animals like elephants and monkeys, but I like pandas best.在一次射击练习中，甲，乙两人前5次射击的成绩分别为（单位：环）甲：10  8  10  10  7乙：7  10  9  9  10则这次练习中，甲，乙两人方差的大小关系是S甲2 S乙2（选填“＞”、“=”、“＜”）．