下面是某同学在测肺活量时，记下的三次数值，分别是：3200mL、3500mL、3800mL，则该同学的肺活量应为（    ）

阅读短文，判断下列句子“正确”还是“错误”。

    Which Skirt to Wear?

    Tina is 8 years old, and follows her own ideas. When her parents tell her to do something, she always doesn't do it. Today, she will go to a friend's birthday party. She is now choosing skirt to wear. She has three skirts: a blue skirt, a white one and a yellow one. She asks her father, “Which one is the best?” her father says, “I think the blue one is the best.” Then she asks her mother, “Which one do you think is the best?” Her mother answers, “The white one, of course!” Tina says, “Thank you.” Then she puts on the yellow skirt and goes out.

建于河南安阳的一位中国古代妇女的塑像。在她的墓葬中出土了大量精美的（   ）

如图，AB是⊙O的直径，点C在⊙O上，CD⊥AB，垂足为D，已知CD=4，OD=3，求AB的长是 ____

作为正在接受九年义务教育的学生,应履行受教育的义务,但存在个别同学上课玩手机的现象,你想对他们说　(　　)