2. 化学与生活密切相关,下列有关说法正确的是( )
A. 维生素C具有还原性,在人体内起抗氧化作用
B. 糖类、蛋白质、油脂属于天然高分子化合物
C. 煤经气化和液化两个物理变化过程,可变为清洁能源
D. 制作航天服的聚酯纤维和用于光缆通信的光导纤维都是新型无机非金属材料
1. 诗句“春蚕到死丝方尽,蜡炬成灰泪始干”中“丝”和“泪”分别属于
A.纤维素、油脂 B.蛋白质、烃类
C.淀粉、油脂 D.蛋白质、硬化油
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
7.(★★★★)Did________ she was chosen made her very happy?
A.what B.that C.which D.it
6.(★★★★★)________the house Mr Zhang has been broken into?
A.When was it that B.When /Has
C.Has D.Had
5.(★★★★★)Was it not until 1920________ regular radio broadcasts began?
A.while B.which C.that D.since
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
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
2.(★★★★)Was it 8 o’clock________you heard someone________ at the door?
A.when;knocking B.when;knock C.that;knocking D.that;knock
1.(★★★★★)-Whom would you rather________ the car?
-My father.
A.have fix B.have to fix C.had fix D.have to be fixed
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com