水坝是什么?
人们可以改变地球

Flashcard
•
Science
•
2nd Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
水坝是用来控制水流的结构,通常用来储存水或防止洪水。
2.
FLASHCARD QUESTION
Front
防护林的作用是什么?
Back
防护林是用来挡住大风和保护土地的树木。
3.
FLASHCARD QUESTION
Front
短堤是什么?
Back
短堤是用来挡住河水的结构,防止水流侵蚀土地。
4.
FLASHCARD QUESTION
Front
长堤的作用是什么?
Back
长堤是用来挡住海水的结构,保护海岸线。
5.
FLASHCARD QUESTION
Front
人类如何改变地球?
Back
人类通过建造水坝、短堤、长堤和防护林等结构来改变地球的环境。
6.
FLASHCARD QUESTION
Front
水坝是人造的吗?
Back
是的,水坝是人类建造的。
7.
FLASHCARD QUESTION
Front
防护林通常由什么组成?
Back
防护林通常由一排排的树组成。
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