如果小君不小心割到手,她会马上作出什么反应?

四年级科学_习题

Quiz
•
Other Sciences
•
4th Grade
•
Medium
Used 796+ times
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
举起双手
大声哭泣
用另一只手捏住被割伤的手指
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项有关人类的排泄和排遗的说明是正确的?
人类不需要每天排泄和排遗
肾帮助人类排出体内的毒素
肺排出矿物盐、尿素和水分
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项显示人类对外来刺激产生反应的重要性?
减低受伤的机会
能承受疼痛
使四肢变得敏捷
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
"海龟在陆地上生活,也可以长时间在水里活动。"
哪项有关海龟的说明是正确的?
海龟的呼吸率很低
海龟拥有不止一个呼吸器官
海龟用腹部两侧的气孔呼吸
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项有关光合作用的说明是正确的?
植物需要氧气和阳光来进行光合作用
植物吸收二氧化碳和水,把糖转换成淀粉
叶子中的叶绿素吸收阳光,把水分和二氧化碳转换成糖,并释放出氧气
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项有关物体体积的说明是正确的?
物体越大,体积越小
体积是物体表面的大小
物体越大,所占据的空间越大
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
为什么摆钟和脉搏适合用来测量时间?
会不断地摆动和跳动
摆动和跳动具有规律及持续性特性
摆动和跳动不受气候的影响
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