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4、通常用來衡量一個(gè)國家石油化學(xué)工業(yè)發(fā)展水平標(biāo)志的是(  )

A.石油的年產(chǎn)量           B.合成纖維的年產(chǎn)量 

C.乙烯的年產(chǎn)量     D.硫酸的年產(chǎn)量

試題詳情

3、下列表示物質(zhì)結(jié)構(gòu)的化學(xué)用語正確的是 (    )

A.8個(gè)中子的碳原子的核素符號(hào):12C   B.HF的電子式:

C.Cl離子的結(jié)構(gòu)示意圖:     D. CO2的結(jié)構(gòu)式:O=C=O

試題詳情

2、據(jù)報(bào)道,某些建筑材料會(huì)產(chǎn)生放射性同位素氡,從而對(duì)人體產(chǎn)生傷害,

該同位素原子的質(zhì)子數(shù)是(   )

A.136      B.50       C.86       D.222 

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1、提出元素周期律并繪制了第一個(gè)元素周期表的科學(xué)家是(  

A.戴維    B.阿伏加德羅    C.門捷列夫   D.道爾頓

試題詳情

5.(★★★★)She is wearing________.

   A.a silk new green cap B.a new silk green cap

   C.a cap of silk new green D.a new green silk cap

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4.(★★★★★)Where have you been?We have been looking for you________.

   A.these last all few days B.all few last these days

   C.all these last few days D.these all few last days

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3.(★★★★★)Yesterday we had a lecture given by a ________ teacher.

   A.well-mannered,young school B.young,well-mannered,school

   C.well-mannered,school young D.school well-mannered young

試題詳情

2.(★★★★★)The Greens live in a________ house.

   A.big,white,two-story B.two-story,white,big

   C.white,big,two-story D.white,two-story,big

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1.(★★★★★)I’ll go to the supermarket with my grandfather.We are going to buy some________glasses.

   A.French lovely old B.lovely old French

   C.lovely French old D.old lovely French

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3.實(shí)質(zhì)上多個(gè)形容詞的語序是與被修飾的名詞關(guān)系越密切的詞越靠近名詞。

   ●殲滅難點(diǎn)訓(xùn)練

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