0  426619  426627  426633  426637  426643  426645  426649  426655  426657  426663  426669  426673  426675  426679  426685  426687  426693  426697  426699  426703  426705  426709  426711  426713  426714  426715  426717  426718  426719  426721  426723  426727  426729  426733  426735  426739  426745  426747  426753  426757  426759  426763  426769  426775  426777  426783  426787  426789  426795  426799  426805  426813  447090 

2. 化學(xué)與生活密切相關(guān),下列有關(guān)說法正確的是(   )

A. 維生素C具有還原性,在人體內(nèi)起抗氧化作用   

B. 糖類、蛋白質(zhì)、油脂屬于天然高分子化合物

C. 煤經(jīng)氣化和液化兩個(gè)物理變化過程,可變?yōu)榍鍧嵞茉?/p>

D. 制作航天服的聚酯纖維和用于光纜通信的光導(dǎo)纖維都是新型無機(jī)非金屬材料

試題詳情

1. 詩句“春蠶到死絲方盡,蠟炬成灰淚始干”中“絲”和“淚”分別屬于

A.纖維素、油脂          B.蛋白質(zhì)、烴類   

C.淀粉、油脂           D.蛋白質(zhì)、硬化油

試題詳情

8.(★★★★★)Was it at the air battle on June 8,1994,________ was led by captain Johnson,________ that Peter lost his life?

A.when;that                           B.that;who

C.which;that                           D.which;when

試題詳情

7.(★★★★)Did________ she was chosen made her very happy?

A.what             B.that              C.which                D.it

試題詳情

6.(★★★★★)________the house Mr Zhang has been broken into?

A.When was it that                      B.When /Has

C.Has                                D.Had

試題詳情

5.(★★★★★)Was it not until 1920________ regular radio broadcasts began?

A.while             B.which            C.that              D.since

試題詳情

4.(★★★★)-Is ________ you want to say?

-Yes,________ that’s all I know.

A.all what;yet         B.which all;unless      C.that all;×          D.all that;so

試題詳情

3.(★★★★★)Was it in the room________ Mr. John lived________the exhibition was held?

A.that;that           B.where;where        C.that;where         D.where;that

試題詳情

2.(★★★★)Was it 8 o’clock________you heard someone________ at the door?

A.when;knocking      B.when;knock        C.that;knocking       D.that;knock

試題詳情

1.(★★★★★)-Whom would you rather________ the car?

-My father.

A.have fix           B.have to fix         C.had fix            D.have to be fixed

試題詳情


同步練習(xí)冊(cè)答案