1.选择题- (共4题)
1.现有：①冰水混合物，②洁净的空气，③二氧化碳，④液态氧气，⑤澄清石灰水，⑥优质矿泉水．在这几种物质中，属于混合物的有（填序号，下同）：{#blank#}1{#/blank#}；属于纯净物的有：{#blank#}2{#/blank#}；属于化合物的有：{#blank#}3{#/blank#}；属于单质的有：{#blank#}4{#/blank#}．
2.根据物质组成是否单一，可将物质分为混合物和纯净物．如空气、澄清石灰水属于{#blank#}1{#/blank#}．根据纯净物的元素组成是否单一，又可以将纯净物分为单质和化合物．以下物质属于化合物的是{#blank#}2{#/blank#}．（填序号）
①氧气②水③二氧化锰④碳⑤五氧化二磷．
3.根据物质组成是否单一，可将物质分为混合物和纯净物．如空气、澄清石灰水属于{#blank#}1{#/blank#}．根据纯净物的元素组成是否单一，又可以将纯净物分为单质和化合物．以下物质属于化合物的是{#blank#}2{#/blank#}．（填序号）
①氧气②水③二氧化锰④碳⑤五氧化二磷．
4.现有①氧气，②自来水，③冰水混合物，④二氧化碳，⑤高锰酸钾，⑥空气．其中，（1）属于混合物的是{#blank#}1{#/blank#}（填序号，下同）；（2）属于纯净物的是{#blank#}2{#/blank#}；（3）属于化合物的是{#blank#}3{#/blank#}；（4）属于属于氧化物是{#blank#}4{#/blank#}．
2.单项选择- (共8题)
5.
As you _________ the tasks, cross them off your list so you may feel less pressure..
| A．obtain | B．gain | C．succeed | D．accomplish |
6.
They received demands that the work ________ at once.
| A．must be done | B．would be done | C．had been done | D．be done |
7.
You have no idea how she finishen the relay race ______ her foot wounded so much.
| A．with | B．when | C．for | D．while |
8.
_______ an important role in a new movie, Andy has got a chance to become famous.
| A．Offer | B．Offered | C．Offering | D．To offer |
9.
Stephen tried to get his wok______ in the medical circle.
| A．to recognize | B．recognizing | C．recognize | D．recognized |
10.
On snowy days, you have to drive very ________ to avoid traffic accident.
| A．neatly | B．smoothly | C．cautiously | D．actually |
11.
—It’s nice. Never before_______ such a special drink!
| A．I have had | B．I had | C．have I had | D．had I |
试卷分析
-
【1】题量占比
选择题:(4道)
单项选择:(8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：8
7星难题：0
8星难题：0
9星难题：0