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5.3.6g碳在一定量的氧氣中燃燒,反應(yīng)后生成的氣體質(zhì)量為9.2g。則在標(biāo)準(zhǔn)狀況下,生成物CO和CO2的體積比為(  C )

A.3:2      B.4:1      C.5:1      D.7:4

試題詳情

4.在等體積的NaCl、MgCl2、AlCl3三種溶液中,分別加入等量的AgNO3溶液,恰好都完全反應(yīng),則以上三種溶液的物質(zhì)的量濃度之比為( D  )

A.1:2:3     B.3:2:1     C.1:1:1     D.6:3:2

試題詳情

3.將5mol/L的Mg(NO3)2溶液a mL稀釋至b mL,稀釋后溶液中NO3的物質(zhì)的量濃度為(  D  )

A.mol/L   B.mol/L   C.mol/L    D.mol/L

試題詳情

2.在反應(yīng)3Cu2S+22HNO36Cu(NO3)2+3H2SO4+10NO+8H2O中,1mol還原劑失去原子的物質(zhì)的量為(  C )

A.6mol     B.8mol      C.10mol     D.12mol

試題詳情

1.與8g SO3中氧原子數(shù)相同的是(B   )

A.9.6g  H2SO4        B.6.6g CO2

C.6.4g  SO4        D.6.72L CO(常溫、常壓)

試題詳情

第二節(jié) 書面表達(dá)(滿分30分)

假設(shè)你是李華,你的外國網(wǎng)友Tom最近從網(wǎng)上了解到有關(guān)中國的“留守學(xué)生(left­behind students)”的問題,但不是很明白,為此,他通過電子郵件向你詢問。請根據(jù)下列要點用英語給Tom回一封120詞左右的電子郵件:

“留守學(xué)生”產(chǎn)生的原因:父母外出打工,無法照顧子女;

“留守學(xué)生”遇到的現(xiàn)實問題;

你對解決“留守學(xué)生”問題的看法。

Dear Tom,

I am very glad that you asked me the question about the problem with the “l(fā)eft­behind students” in China.

________________________________________________________________________

________________________________________________________________________

Best regards.

Li Hua

試題詳情

第一節(jié) 短文改錯(共10小題;每小題1分,滿分10分)

(寧波四中2009-2010學(xué)年度期中考試卷)

It is five years now since I graduate from No.3 High School.Last Saturday,the class that I was in held a get­together,which took us a long time prepare.It was indeed not easy to get in the touch with everybody and set a well time for all of us.We all enjoyed this precious day greatly,remember the time we spent together and the people they were familiar with.It was a pity which some of us were not present as they had gone to abroad for further studies,and they called back or sent greeting card from different places.   

試題詳情


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