
四年级科学
Authored by CHUNG LEE FOON
Science
2nd Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
你运用什么感觉器官来观察P植物和Q植物的成长?
触觉
视觉
味觉
嗅觉
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一组学生进行P实验时,运用了 "测量和应用数目"这个技能。以下哪项可代表P实验?
验证电路中的干电池能够使多少个灯泡发亮。
确定某种植物是否能够用切茎的方法来繁殖。
测量食盐在不同体积的水中溶解所需的时间。
确定哪些物体是电的绝缘体,哪些是电导体。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
运动越剧烈,流汗越多。
根据以上的假设,以下哪项是以上假设的操纵性变数。
运动的时间
流汗的多少
流汗和运动的关系
运动的剧烈程度
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
根据以上资料进行试验,可作出什么目的?
糖的粗细
糖完全溶解所需的时间
糖越细,糖完全溶解所需的时间越短。
为了研究糖的粗细与糖完全溶解所需的时间之间的关系。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
运动越剧烈,流汗越多。
根据以上的假设,以下哪项是以上假设的反应性变数。
运动的时间
流汗的多少
流汗和运动的关系
运动的剧烈程度
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
“呼吸率” 是什么意思?
胸腔扩张时的位置
胸腔起伏所需的时间
进行各项活动时呼出的气体
胸腔在固定时间内起伏的次数
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是排泄?
把有毒气体排出体外的过程
把体内的粪便排出体外的过程
把食物中的营养排出体外的过程
通过呼吸、排汗和排尿把体内废物排出体外的过程
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