1.选择题- (共10题)
6.
工业上常用一定浓度的稀硫酸对表面生锈的铁件进行酸洗．某酸洗池里盛有440kg质量分数为40%的硫酸溶液，放入表面生锈的铁件浸泡，浸泡过程中单质铁也有部分损失，假设溶液中只发生了如下反应：
Fe2O3+3H2SO4=Fe2（SO4）3+3H2O
Fe+Fe2（SO4）3=3FeSO4
取出铁件用水冲洗，冲洗液倒入酸洗池中合并共得到580kg溶液，其中只有H2SO4和FeSO4两种溶质，经过测定硫酸的质量分数降低到5%．计算：
①消耗H2SO4的质量．
②损失的单质铁的质量．
③要使H2SO4的质量分数恢复到40%，需要加入质量分数为98%的硫酸的质量．
7.
用下列方法鉴别物质不能达到实验目的是（ ）
序号 | 物质 | 鉴别方法 |
A | 白酒与矿泉水 | 闻气味 |
B | MnO2与碳粉 | 分别加入双氧水 |
C | Na2SO4溶液与AgNO3溶液 | 分别加入BaCl2溶液 |
D | NaOH溶液与Ca（NO3）2溶液 | 分别加入MgCl2溶液 |
2.单项选择- (共15题)
11.
At present obtaining more land is only possible as _____ result of urbanization, when more farmers leave _____ rural areas to work in the city.
| A．a ; the | B．the ; / | C．a ; / | D．the ; the |
12.
With the stress heavier, physicians are always ______ caution upon citizens in view of heart attack.
| A．declaring | B．urging | C．suggesting | D．favouring |
13.
Hearing their grandpa was coming, they began to ________ the work to prepare for a nice dinner.
| A．set off | B．set down | C．set aside | D．set about |
14.
All the buildings look old but the library _________.
| A．need to be repaired | B．needs repairing | C．needs be repaired | D．need repairing |
15.
Nowadays, there seems little room for traditional literature, but skills like writing or critical thinking actually ________ promise for opening doors to good entry-level jobs.
| A．hold | B．reflect | C．set | D．make |
16.
It’s desired especially this year that this rule _______be brought to the attention of all the teachers.
| A．should | B．would | C．might | D．could |
17.
The pavements are designed to provide easy access for the blind to _______conveniently, which is bound to_______ active effects on people’s opinion on the government’s performance.
| A．walk ; produce | B．walking ; producing | C．walk ; producing | D．walking ; produce |
18.
If the work _____ by the end of this month is delayed,the team will be fined.
| A．to be finished | B．is finished | C．being finished | D．finished |
19.
The people, ________ had been damaged by the flood, were given help by the Red Cross.
| A．all whose homes | B．all of whose homes |
| C．all their homes | D．all of their homes |
20.
It has been evident that too many children in the city are left ________ when their development requires parents’ close attention.
| A．alone | B．off | C．out | D．behind |
21.
Jeremy Lin’s success is more than coincidence. ________ talent, persistence and sweat can not be ignored.
| A．Except for | B．As well as | C．But for | D．But |
22.
---- You’ve done very well. It’s a pity you missed the sports meeting last week.
---- Yes, it was a real pity! _______, I’m feeling better now.
---- Yes, it was a real pity! _______, I’m feeling better now.
| A．Never mind | B．You’re so kind | C．Take it easy | D．That’s life |
23.
---- It’s raining heavily! Why must we go out right now?
---- The reason is that we are going to help the villages on the mountains.
---- ______.
---- The reason is that we are going to help the villages on the mountains.
---- ______.
| A．Go ahead | B．with pleasure | C．It depends | D．Congratulations |
24.
— The apples are already smelling. You shouldn’t have chosen that kind for me.
— _______.
— _______.
| A．Oh, don’t complain about a gift. | B．What’s wrong with you？ |
| C．Sorry. I’ll give you a better one next time. | D．What can I do for you？ |
试卷分析
-
【1】题量占比
选择题:(10道)
单项选择:(15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：0
5星难题：0
6星难题：15
7星难题：0
8星难题：0
9星难题：0