
J2 Final Exam Revision
Authored by 苏 秀芬
Science
8th Grade
Used 9+ times

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34 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项不是矿物的特征?
A 固体
B 有机物
C 天然
D 有固定化学成分
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
把矿物在瓷板上擦过后留下一条粉末痕迹的这种鉴定方式叫做____。
A 光泽
B 条痕
C 硬度
D 断口
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
我们对大气层的依据是
A 垂直方向上空的密度
B 垂直方向上空气的成分
C 垂直方向上空的温度
D 垂直方向上空的压强
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
大气全部的质量几乎全部的水蒸气集中在
A 对流层
B 平流层
C 热层
D 外层
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列措施能有效防治空气污染的是
A 开发太阳能清洁能源
B 实行烧芭耕作
C 大力提倡燃煤发电
D 大面积砍伐森林
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下是绿色植物能防治空气污染的好处,除了
A 滤除和吸收灰尘
B 吸收大气中的有害气体
C 修补被破坏的臭氧层
D 调节气候
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
传送花粉粒到柱头的过程叫做____。
受精作用
传粉作用
自花传粉
异花传粉
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