1.选择题- (共5题)
3.下列各项操作中，不发生“先产生沉淀，然后沉淀又溶解”现象的是：①向饱和碳酸钠溶液中通入过量的CO2；②向NaAlO2溶液中逐滴加入过量的稀盐酸；③向AlCl3溶液中逐滴加入过量稀氢氧化钠溶液；④向硅酸钠溶液中逐滴加入过量的盐酸（ ）
4.下列各项操作中，不发生“先产生沉淀，然后沉淀又溶解”现象的是：①向饱和碳酸钠溶液中通入过量的CO2；②向NaAlO2溶液中逐滴加入过量的稀盐酸；③向AlCl3溶液中逐滴加入过量稀氢氧化钠溶液；④向硅酸钠溶液中逐滴加入过量的盐酸（ ）
2.单项选择- (共7题)
6.
Most of the colleagues in the company have________ against Joy, for she comes from a small remote mountain village.
| A．harm | B．prejudice | C．envy | D．blame |
7.
---Do you know who invented ________ telephone?
---No. But it is really________ most important invention.
---No. But it is really________ most important invention.
| A．/; the | B．the ;/ | C．/ ;a | D．the ;a |
8.
The young dancers looked so charming in their beautiful clothes that we took ________ pictures of them.
| A．many of | B．masses of |
| C．the number of | D．a large amount of |
9.
The sad thing is _________the world-famous artist devoted his whole life _____, he only sold one painting before he died.
| A．although; to painting | B．that; to paint |
| C．that although; to painting | D．although that; to paint |
10.
I feel like __________. But there isn’t much time left, I’d rather we ______ a taxi.
| A．walking; hire | B．to walk; hire | C．to walk; hired | D．walking; hired |
11.
________one scientist has pointed out, children’s skulls are not fully developed.
| A．That | B．As | C．Which | D．What |
试卷分析
-
【1】题量占比
选择题:(5道)
单项选择:(7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：0
7星难题：0
8星难题：7
9星难题：0