11.Nothing _____ after the terrible fire caused by the careless doorkeeper.
A.left tinued C.kept D.remained
第二节 情景对话(共5小题,每小题1分,满分5分)
根据对话情景和内容,从对话后所给的选项中选出能填入每一空白处的最佳选项,并在答题卡上将该选项涂黑.选项中有两个为多余选项
Make and John are discussing the activity for Sunday.
Mark: Hi,John!
John: Hi,Mark!Sunday again!
Mark: 6 The weather is fine.Something special?
John: Yes!I feel like going to a library.
Mark: I agree. 7 .
John: What about the Haitian Universuty?So far as I know,it’s free.
Mark: 8 .However ,now you have to pay to borrow the world-famous books.
John: What about you? What do you feel like doing?
Mark: I’d rather go to the Science College Library. 9 It’s all about science,educatation,culture,space and satellites.
John: I’d like to see that,too.I’m planning to attend a composition contest on how to learn English better and use it more freely.Maybe I could find out some useful information.
Mark: Fine! 10 I’ll tell my mother what we’ve decided to do.And anything else?
John: No!Let’s go!
A. No,not any more.It used to be free.
B. What shall we do today?
C. There’s a special exhibition today.
D. Where did you go today?
E. Why don’t you get your things ready?
F. They are very interesting.
G. Which library would you like to visit?
第三节 语法和词汇知识(共15小题,每小题1分,满分15分)
从每小题的A、B、C、D四个选项中,选出可以填入空白处的最佳选项.
5.mosquito A./mə'skɪ:təu/ B./mɒskɪ:tə/ C./mə'skɪ:tə/ D./mɒ'ski:təu/
4.decrease A./dɪ'krɪ:s/ B./dɪ'sreɪs/ C./dɪ'kreɪs/ D./dɪ'srɪ:s/
3.reality A./ 'rɪælətɪ/ B./rɪ'ælətɪ/ C./rɪæ'lətɪ/ D./rɪælə'tɪ/
2.fancy A./ 'fænkɪ/ B./ 'feɪnsi/ C./ 'fænsɪ/ D./ 'feɪnkɪ/
第一节 语音知识(共5小题,每小题1分,满分5分)
从每小题的A、B、C、D四个选项中,找出所给单词的正确读音。
1.host A./haut/ B./həuzt/ C./hauzt/ D./həust/
6.(1)SiO2 + Na2CO3 Na2SiO3 + CO2↑
Al2O3 + Na2CO3 2NaAlO2 + CO2↑
(2)H2SiO3(或H4SiO4); SiO32-+2H+= H2SiO3 ↓ (或2H++SiO32-+H2O=H4SiO4↓)
(3)铁
6.高岭土(主要成分是Al2O3.2SiO2.2H2O,还含有少量CuO、Fe2O3)可用来制取新型净水剂(铝的化合物),其步骤如下:将土样和纯碱混合均匀,加热熔融,冷却后用水浸取熔块过滤,弃去残渣,滤液用盐酸酸化,经过滤,分别得到沉淀和溶液,溶液即净水剂。
(1)写出熔融时主要成分与纯碱反应方程式(Al2O3与纯碱反应和SiO2与纯碱的反应类似):
(2)最后沉淀物是
生成该沉淀的离子方程式为
(3 )实验室常用的坩埚有瓷坩埚、氧化铝坩埚、和铁坩埚,本实验在熔融土样时应选用
坩埚。
答案:1.C 2.C 3.C 4.A 5.C
5.下列离子方程式书写不正确的是( )
A.石英与烧碱反应:SiO2+2OH-=SiO32-+H2O
B.往烧碱溶液中通入CO2:CO2+ 2OH-= H2O+ CO32-
C.向小苏打溶液中加入过量的石灰水:2HCO3-+Ca2++2OH-=CaCO3↓+H2O+ CO32-
D.往水玻璃中加入盐酸:2H++SiO32-+H2O=H4SiO4↓
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