1.选择题- (共4题)
1.取22.2g石灰石样品,放入盛有126g稀盐酸的烧杯中,石灰石中的碳酸钙与盐酸恰好完全反应(杂质不反应,也不溶解),烧杯内物质质量变为139.4g.则石灰石中碳酸钙的质量为{#blank#}1{#/blank#}.(提示CaCO3+2HCl=CaCl2+H2O+CO2↑)
2.取22.2g石灰石样品,放入盛有126g稀盐酸的烧杯中,石灰石中的碳酸钙与盐酸恰好完全反应(杂质不反应,也不溶解),烧杯内物质质量变为139.4g.则石灰石中碳酸钙的质量为{#blank#}1{#/blank#}.(提示CaCO3+2HCl=CaCl2+H2O+CO2↑)
3.取22.2g石灰石样品,放入盛有126g稀盐酸的烧杯中,石灰石中的碳酸钙与盐酸恰好完全反应(杂质不反应,也不溶解),烧杯内物质质量变为139.4g.则石灰石中碳酸钙的质量为{#blank#}1{#/blank#}.(提示CaCO3+2HCl=CaCl2+H2O+CO2↑)
2.单项选择- (共6题)
5.
A serious study of physics is impossible _______ some knowledge of mathematics.
A.against | B.before |
C.beyond | D.without |
6.
(2013·陕西,22)Although Rosemary had suffered from a serious illness for years,she lost ________ of her enthusiasm for life.
A.some | B.neither | C.none | D.all |
7.
_______ can be good at something for 40 years if he doesn’t love it.
A.Anybody | B.Everybody | C.Nobody | D.Somebody |
8.
Human life is regarded as part of nature and, as such, the only way for us to survive is to live_________nature.
A.in view of | B.in need of | C.in touch with | D.in harmony with |
9.
She drove so fast at the turn that the car almost went _______ the road.
A.on | B.along | C.from | D.off |
试卷分析
-
【1】题量占比
选择题:(4道)
单项选择:(6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:4
7星难题:0
8星难题:1
9星难题:1