题目内容

[音频]

A. Because Jimmy doesn't have the right attitude.
Because Jimmy is kicking others out of the team.
C. Because Jimmy doesn't like to help other teammates.
D. Because Jimmy may make the team lose the championship.

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[音频]

A. He feels sick.
B. He has hurt his leg.
C. He doesn't know he's slow.
D. He doesn't have energy to run.

[音频]

A. Talk to the coach.
B. Speak directly to Jimmy.
C. Speak to other teammates.
D. Leave a note on Jimmy's car.

2.下列调查适合普查的是( )

A. 了解某班统计学考试成绩
B. 了解 一批灯泡的使用寿命
C. 了解一批导弹的杀伤半径
D. 了解一批袋装食品是否含有防腐剂

统计与数学的区别就在于统计的结论不是百分百确定的,其结论具有一定的不确定性( )

A. 对
B. 错

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