
期末考练习
Authored by J125 白旻轩
Science
6th - 8th Grade
Used 1+ times

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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
肺泡壁是由( )层上皮细胞构成
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪一项不是属于氧气的性质?
1)无色无味 2)密度大于空气
3)可溶于水 4)液态为蓝色
1
2
3
4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物质N最有可能是什么?
O₂
N₂
H₂
CO₂
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
把燃烧的木棒放入一集气瓶中,若木棒熄灭,则该瓶中可能是什么?
氢气
氧气
二氧化碳
无法确定
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下有关稀有气体的用处哪一项是错的?
1)氦气可用于填充气球 2)氦气可和氧气混合充入氧气筒,供深海潜水员呼吸
3)氮气可和氧气混合充入氧气筒,供深海潜水员呼吸 4)氪气可填入电弧灯,标记飞机跑道
1
2
3
4
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
一瓶中装有某种气体,当燃烧的木棒放入瓶中是会继续燃烧,则瓶中有可能是什么?
空气
二氧化碳
水蒸气
氧气
不知道
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A有可能是什么?
KMnO₄
MnO₂
H₂O₂
炜哲
NaCl
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