我们熟悉的这些物质属于纯净物的是

【名词&注释】

中学生(middle school students)、使用权(use right)、对照组(control group)、占有权(right of possession)、处分权(right of disposition)、实验组(experimental group)、服装厂(garment factory)、合法财产(legal property)、相似之处、石灰浆(lime mortar)

[单选题]我们熟悉的这些物质属于纯净物的是

A. 干冰
B. 石灰浆^{(lime mortar)}
C. 食盐
D. 食醋

查看答案&解析查看所有试题

学习资料：

[单选题]在探究温度对鼠妇生活影响的实验中，实验组和对照组都应该保持相同的条件是

A. 光、温度、湿度等
B. 鼠妇数量、光、温度等
C. 温度、湿度、鼠妇的数量等
D. 空气、湿度、光等

[单选题]中学生许重宁发明了“新型组合救援医用服”获得专利后，其父母代表她与某服装厂^{(garment factory)}协议，每卖掉一套衣服，许重宁可获得 2—4元的提成。这表明，许重宁对自己的合法财产^{(legal property)}

A. 享有收益权
B. 享有使用权
C. 享有占有权
D. 享有处分权

[单选题]II．完型填空I have a twin sister，Kitty． She has (11) hair than me． I don't like long hair．Many people think we (12) have lots of things in common．l-m afraid this is not true． When my parents ’friends come to our home，Kitty often sits there and says (13) ，but I like to talk with them．So she is (14) than me． Kitty likes reading，drawing and cooking． I just like swimming and playing basketbaIl．She has (15) hobbies than me，but she is not as athletic (16) me． Be-cause Kitty does (17) than me at school，my parents often say to me，"(18) Kitty is younger than you，you should learn (19) her． We do have some similarities(相似之处)，however． For example，we (20)like eating fast food ，going shopping and listening to pop music．

B. longer
C. long
D. short
E. shorter

[单选题]22． When did Jackie Chan's parents move to Hong Kong?

A. They moved to Hong Kong a short time after Jackie Chan was born．
B. They moved to Hong Kong a short time before Jackie Chan was born．
C. They moved to Hong Kong after they came back from America．
D. They moved to Hong Kong after Jackie Chan studied in the China Drama Acade-my．

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