如果出现洪水，_______ 可以用来保护城市。
人们可以改变地球
Flashcard
•
Science
•
2nd Grade
•
Hard
Lulu Zhang
FREE Resource
Student preview
8 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Back
堤
2.
FLASHCARD QUESTION
Front
当人们砍掉森林，建造房子和公路，会造成风化侵蚀吗？
Back
会
3.
FLASHCARD QUESTION
Front
这是人建造的吗？
Back
是
4.
FLASHCARD QUESTION
Front
这是什么？ 水坝, 短堤, 长堤, 防护林
Back
水坝
5.
FLASHCARD QUESTION
Front
山里风很大，房子怎么样可以不被大风吹跑？
Back
种很多树
6.
FLASHCARD QUESTION
Front
防护林什么样？
Back
一排排的东西挡住大风，可以是树，或者石头
7.
FLASHCARD QUESTION
Front
短堤
Back
沿着河造的，用来挡住河水的
8.
FLASHCARD QUESTION
Front
人们怎样造成风化侵蚀？
Back
砍掉很多树
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