学习化学的目的并不在于要成为化学家，重要的是善于用化学知识去

【名词&注释】

蛋白质(protein)、化学家(chemist)、形容词性物主代词、液化气泄漏

[单选题]学习化学的目的并不在于要成为化学家，重要的是善于用化学知识去分析、解决生产生活中的问题。从化学的角度看，下列说法中正确的是

A. 夜晚发现液化气泄漏立即开灯检查
B. 人们每天的饮食中都应有蔬菜、水果，其目的是补充蛋白质
C. 扑灭电器、图书档案等火灾最适宜的灭火器是液态二氧化碳灭火器
D. 炒菜时油锅着火，可立即加水灭火

查看答案&解析查看所有试题

学习资料：

[单选题]Dear Mary，How are you and your parents? Did you ( 11) a good time last weekend? We had a day ( 12) from school this week． But I had a(n) ( 13) day．

A. So I ( 15) to stay at home and help my mum do house- work． Then I went to the Gift Shop and bought ( 16) gifts． After that，l read a boring book and watched TV about Super Voice Girls． After lunch，my parents wanted to go ( 17) a drive，so I went with them．However，that wasn’t interesting，( 18)．In the evening，my best friend ( 19) me to watch-an interesting movie ( 20 ) sharks．
B. Please write to me soon!
C. Yours,
D. Lily
F. enjoy ．
G. spend
H. have '
I. had

[单选题]20．

A. them
B. their
C. their’s
D. their room

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