1.选择题- (共4题)
1.除去NaCl溶液中含有的CaCl2、MgCl2、Na2SO4杂质的操作有：①加过量的NaOH溶液：②加过量的BaCl2溶液；③过滤；④加适量的盐酸；⑤加过量的Na2CO3溶液．（提示：Mg（OH）2、BaSO4、BaCO3难溶于水）
2.除去NaCl溶液中含有的CaCl2、MgCl2、Na2SO4杂质的操作有：①加过量的NaOH溶液：②加过量的BaCl2溶液；③过滤；④加适量的盐酸；⑤加过量的Na2CO3溶液．（提示：Mg（OH）2、BaSO4、BaCO3难溶于水）
3.Later in this chapter cases will be introduced to readers_________ consumer complaints have led to changes in the law.
4.一定条件下，4.8gCH4与16.0gO2恰好完全反应，生成10.8gH2O、4.4gCO2和物质X，则生成X的质量为{#blank#}1{#/blank#}g，X的化学式为{#blank#}2{#/blank#}．
2.单项选择- (共7题)
5.
— What do you think made him put into prison?
—_______ stealing the valuables.
—_______ stealing the valuables.
| A．Because he was accused of | B．accused of |
| C．Being accused of | D．Because of being accused of |
6.
________ in a poor family, he can’t afford to go to school.
| A．Being born | B．Born | C．Having born | D．To be born |
7.
Can you imagine what difficulty people had this year_______against the severe natural disasters?
| A．fighting | B．to fight | C．fought | D．fight |
8.
I went to her home and found her living conditions were_______ than mine.
| A．bad off | B．badly off | C．worse off | D．bader off |
9.
-- “____either you or he to go there?”
--“_____is.”
--“_____is.”
| A．Are; Both | B．Are; Neither | C．Is; Neither | D．Is; Each |
10.
Many a student ________ failed in the biology exam，and Tom is the only one of them who ________ decided to give up the course.
| A．have；has | B．have；have | C．has；have | D．has；has |
试卷分析
-
【1】题量占比
选择题:(4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：6
7星难题：0
8星难题：0
9星难题：1