问题 阅读理解
阅读理解。
The following are three ads (广告):
Air Hostess(空姐)Wanted
1.age between 20 and 33
2.Height from 1.6m to 1.75m
3.Two foreign languages
4.College graduate
Apply to: China airlines, Beijing
Tel:010-88488970
Teacher Needed
For private language school
Teaching experience necessary
Apply to: Instant Languages Ltd,
             Dalian
Tel:0411-4313861
Driver Wanted
Clean driving license
Good-looking
Age over 25
Apply (申请) to: Capes Taxi,
Shenzhen
Tel:0755-6561382
1. If you want to work in the south, you can apply for (申请) a job as _________ .
[ ]
A. a driver
B. an air hostess
C. a teacher
D. all of the above
2. You may call _________ when you wish to be a teacher.
[ ]
A. 0755-6561382
B. 0411-4313861
C. 010-88488970
D. A and B
3. Mary, aged 26, knows English and Japanese, which job can be given to her? _________
[ ]
A. Driving for China taxi.
B. Working for China Airlines.
C. Teaching at instant languages Ltd.
D. None of the above.
4. What prevents (阻止) Jack, an experienced (有经验的) taxi driver, working for Capes Taxi? _________
[ ]
A. Liking beer and wine.
B. Breaking traffic rules.
C. Being unable to speak a foreign language.
D. Not having college education.
5. Which of the following is not mentioned (提到) in the three ads? _________
[ ]
A. Height.
B. Age.
C. Language.
D. Health.
答案

1-5 ABBBD

实验题

合金在生活中应用十分广泛。已知某合金粉末除含金属铝外,还含有铁、铜中的一种或两种。小明利用如图装置对合金粉末中铁、铜的存在进行探究时,误把氢氧化钠溶液当成稀硫酸加入到锥形瓶中,他惊奇的发现有无色气体放出,注射器活塞向右移动。

【提出问题】难道NaOH溶液也能与某些金属发生化学反应吗?

【查阅资料】

(1)铝能与氢氧化钠溶液反应,铁、铜不能与氢氧化钠溶液反应。

(2)铝与氢氧化钠溶液反应的化学方程式为2Al+2NaOH+2H2O═2NaAlO2+3H2↑(其中,NaAlO2溶于水,溶液呈无色)

【进行猜想】猜想1:该合金粉末中除铝外,还含有铁;

猜想2:该合金粉末中除铝外,还含有            

猜想3:该合金粉末中除铝外,还含有铁、铜。

【实验探究】下列实验(见下表)仅供选用的试剂:20%的硫酸溶液、30%的NaOH溶液。

实验记录:

实验步骤实验现象结论
①取一定量的合金粉末,加过量的       ,充分反应后过滤,滤渣备用粉末部分溶解,并有无色气体放出,形成无色溶液合金中一定含有  
②取步骤①所得滤渣,加过量       ,充分反应滤渣部分溶解,并有无色气体放出,溶液呈浅绿色合金中一定含有  
 

【得出结论】猜想3成立。

【拓展】下列可用于小明验证铝、铁、铜三种金属的活动性强弱的一组药品是      

A.Fe、Cu、Al(NO33溶液              B.Al、Fe、Cu、稀盐酸

C.Al 、Cu、FeSO4溶液                  D.Cu、Al(NO33溶液、FeSO4溶液

单项选择题 B型题