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4.人间四月芬芳菲,春天的校园,百花盛开,香远益清,阵阵花香,沁人心脾。花香四溢的现象说明   …………………………………………………(  )

A.分子是不断运动的                      B.分子是由原子组成的

C.分子具有一定的质量                  D.分子之间有一定的间隔

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3.一些食品包装袋中常用生石灰(CaO)做干燥剂,该物质属于…………………(   )

A.酸     B.碱     C.盐      D.氧化物

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2.下列物质属于纯净物的是…………………………………………………………(   )

A.啤酒    B.空气    C.蒸馏水     D.石油

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1.下列变化属于物理变化的是( )

 A.用水为原料制取氢气   B.用空气为原料制取氧气

 C.用石灰石为原料制取生石灰  D.用石墨为原料制取金刚石

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假如你是李华,在最近的研究性学习当中,受《21世纪中学生英语报》 (The 21st Century)之邀,你对你所在的班60名同学(男女各半)进行了上网目的的调查。现将调查结果(如下表所示)用英语给报社的编辑写一封信,报道此事,以引起舆论的关注,并提出你的观点和建议。

 

注意: 1、报道应包括图表所示全部内容,可适度发挥。

2、文章的开头与结尾已给出,不计入总词数。

3、词数:100-120   

4、要点提示:(1)上网的目的;(2)读新闻;(3)发送邮件;(4)聊天;(5)学习;(6)玩游戏;(7)评语 

Dear editor,

I have recently made a survey among 30 boys and 30 girls in my class about their purpose of getting on the Internet.

                                        

重庆一中高2010级高三上期第三次月考

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One night, while surfing the Internet, I happen to find a
76.       
chatting room, there people were talking to each other happily
77.      
in English. I couldn’t help chat with some of them. Much to
78.      
my surprised, I found the oral English of some teenagers was
79.      
much better than me. I realized my oral English needed improving
80.      
badly. I asked them for advices and encouraged me to practise
81.      
more whenever possibly. So every day after that I would spend
82.      
about an hour practising my oral English. Day by day I made a great
83.      
progress in my oral English. With time was going by, my efforts paid off
84.      
and I could even communicate foreigners freely.
85.      

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