1.选择题- (共11题)
5.在一定条件下,RO {#mathml#}{#/mathml#} 与R﹣可发生反应:RO {#mathml#}{#/mathml#} +5R﹣+6H+═3R2+3H2O,下列关于R元素的叙述中,正确的是( )
6.在一定条件下,RO {#mathml#}{#/mathml#} 与R﹣可发生反应:RO {#mathml#}{#/mathml#} +5R﹣+6H+═3R2+3H2O,下列关于R元素的叙述中,正确的是( )
7.在一定条件下,RO {#mathml#}{#/mathml#} 与R﹣可发生反应:RO {#mathml#}{#/mathml#} +5R﹣+6H+═3R2+3H2O,下列关于R元素的叙述中,正确的是( )
9.某无色溶液含有下列离子中的若干种:H+、NH {#mathml#}{#/mathml#} 、Fe3+、Ba2+、Al3+、CO {#mathml#}{#/mathml#} 、Cl﹣、OH﹣、NO {#mathml#}{#/mathml#} .向该溶液中加入铝粉,只放出H2,则溶液中能大量存在的离子最多有( )
11.某同学探究同周期主族元素性质递变规律时,自己设计了一套实验方案,并记录了有关实验现象(见下表,表中的“实验方案”与“实验现象”前后不一定是对应关系).
实验步骤 | 实验现象 |
1.将镁条用砂纸打磨后,放入沸水中;再向溶液中滴加酚酞溶液 | A.浮在水面上,熔成小球,做不定向运动,随之消失,溶液变成红色. |
2.向新制得的Na2S溶液中滴加少量新制的氯水 | B.有气体产生,溶液变成浅红色 |
3.将一小块金属钠放入滴有酚酞溶液的冷水中 | C.剧烈反应,迅速产生大量无色气体. |
4.将镁条投入稀盐酸中 | D.反应不十分剧烈,产生无色气体 |
5.将铝条投入稀盐酸中 | E生成淡黄色沉淀 |
请你帮助该同学整理并完成实验报告.
2.单项选择- (共11题)
12.
In ______ eyes of my parents, a knowledge of English is ______ must in the world today.
A. the;不填 B. the; a C. 不填; a D. 不填;不填
A. the;不填 B. the; a C. 不填; a D. 不填;不填
13.
A Pakistani intelligence official confirmed that the three-storey compound where Bin Laden spent his last years and was killed would be ______.
A. put down B. taken down C. pulled down D. turned down
A. put down B. taken down C. pulled down D. turned down
14.
— You should have told her about the meaning of the gesture.
— I meant ______, but I had some unexpected guests.
A. to do B. to have C. doing D. doing so
— I meant ______, but I had some unexpected guests.
A. to do B. to have C. doing D. doing so
15.
China’s hurdler Liu Xiang was disqualified due to false start in the 60-metre event, ______ his rival Dayron Robles of Cuba an easy win of 7.66 seconds.
A. giving B. given C. to give D. gave
A. giving B. given C. to give D. gave
16.
This building is both a secret and a mystery. No one shall be admitted into it ______ he can give the right password.
A. if B. as C. since D. unless
A. if B. as C. since D. unless
17.
— The “No.1 Document” is designed to help the rural population increase their incomes.
— I believe that peasants’ life ______ better and better.
A. will have got B. has got C. gets D. will be getting
— I believe that peasants’ life ______ better and better.
A. will have got B. has got C. gets D. will be getting
18.
It is reported that China will not buy the Euro debt until some thorough research ______.
A. will be done B. had been done
C. has been done D. will have been done
A. will be done B. had been done
C. has been done D. will have been done
19.
— Where did you buy this beautiful skirt?
— It was in the shop ______ my mother is working.
— It was in the shop ______ my mother is working.
A.that | B.which | C.where | D.what |
20.
--What’s your idea?
--My opinion is _____ ____ happens, we should not stop the reform.
A. when; what B. that; when C. that; whatever D. when; what
--My opinion is _____ ____ happens, we should not stop the reform.
A. when; what B. that; when C. that; whatever D. when; what
21.
By no means true that all native speakers of English know their own language very well.
A.is that | B.that is | C.is it | D.it is |
试卷分析
-
【1】题量占比
选择题:(11道)
单项选择:(11道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:9
7星难题:0
8星难题:0
9星难题:0