A:平均数和众数
B:众数和极差
C:众数和方差
D:中位数和极差
Boys and girls, what ______ can you do in the meeting?
下面细胞器中,参与有机物合成作用的是①核糖体 ②线粒体 ③内质网 ④高尔基体 ⑤叶绿体
A. carrots B. milk C. sandwich D. beef E. delicious
Hi, I' m Mary. My favourite food is a ____. It's ____.I don't like____but chicken is OK. My favourite vegetables are ____.I like ____very much.