科学综合练习（4-6年级）
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Science
10th - 12th Grade
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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一组学生进行了一项实验，他们用充气泵给气球充气，并观察气球体积的变化。下图显示实验的结果。这项实验的操纵性变数是什么？
泵气的次数
泵气的力度
气球的体积
气球的质量
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下图显示两个学生在一项实验中的对话。根据下图，以下哪项是他们所应用的科学程序技能？
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下图显示人类的某个器官。以下哪项是图中器官的主要功能？
保护气体不受到污染
使体内充满氧气和水分
使氧气和二氧化碳可以进行交换
把体内的二氧化碳变成有用的气体
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. 进行篮球运动的哪个动作时，我们的呼吸率是最高的？
原地拍球
站着作远距离投篮
高举双手，准备把球传给队友
摆脱对方的防卫，快速带球上篮
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
吸入和呼出的空气中的二氧化碳含量有什么区别？
呼出的空气中只含有二氧化碳
吸入的空气中含有较多二氧化碳
呼出的空气中的二氧化碳含量比吸入的空气中的二氧化碳含量多
吸入的空气中的二氧化碳含量比呼出的空气中的二氧化碳含量多
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪个是排泄器官？
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项对人体的排泄器官有害？
多喝煮沸的水
多吃蔬菜水果
多进行户外运动
多吃高盐分的食物
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