
二年级科学第9课水
Authored by TIONG YS
Science
2nd Grade
10 Questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
以下哪个不是天然水源?
泉眼
海
河流
游泳池
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
哪项说明水往哪儿流是正确的?
水从低处流向高处
水从高处流向高处
水从高处流向低处
水从低处流向低处
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
说出这天然水源的名称。
泉眼
瀑布
水井
河流
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地球表面多少的面积被海水覆盖?
百分之八十一
百分之九十
百分之七十一
百分之六十五
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
为什么海水是咸的?选出以下两个答案。
岩石的盐分从河流流入大海。
海洋生物的排泄物让海水变咸。
海底的珊瑚让海水变咸。
海底火山喷发的矿物质含有盐分。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水在什么情况之下,变成水蒸气升到空中?
受温
受寒
受冷
受热
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水蒸气在空中凝聚成小水滴,是什么原因?
水蒸气在空中受热后,凝聚成小水滴。
风把空中的水蒸气凝聚成小水滴。
水蒸气在空中受冷后,凝聚成小水滴。
雨把空中的水蒸气凝聚成小水滴。
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