【单选题】He dressed himself quickly, _____ his schoolbag and went to school.
【单选题】When a matador is in his costume, they say he's dressed in'lights' —on account of the spangle and glitter of his suit. As you might expect in the garishly symbolic world of bullfighting, though, itmea...
A.
One of his ancestors appeared in Hemingway's novels.
B.
He was born in a famous family.
C.
His wife was famous in tabloid stories.
D.
His mother is of noble birth.
【单选题】某班级50名学生的统计学成绩如下:60以下有2人,60~70有12人,70~80有20人,80~90有10人,90以上有6人。该班级学生的统计学平均成绩约为( )
【单选题】某班级50名学生的统计学成绩如下:60以下有2人,60~70有12人,70~80有20人,80~90有10人,90以上有6人。计算学生的平均成绩,采用的平均数计算方法为( )
【单选题】某班级50名学生的统计学成绩如下:60以下有2人,60~70有12人,70~80有20人,80~90有10人,90以上有6人。学生统计学成绩的标准差为( )
【简答题】我市某中学七年级甲、乙、丙三个班中,每班的学生人数都为60名,某次数学考试的成绩统计如下:(每组分数含最小值,不含最大值) 丙班数学成绩频数统计表 分数 50~60 60~70 70~80 80~90 90~100 人数 2 9 18 17 14 根据以上图、表提供的信息,则80~90分这一组人数最多的班是 .
【单选题】Out of the crowded bus ,who was dressed in a black suit and waved to a woman.
A.
a tall man in his thirties stepped
B.
stepped a tall man in his thirties
C.
did a tall man in his thirties step
D.
did a tall man step in his thirties