题干

下列实验中,对应的现象以及结论都正确且两者具有因果关系的是(   )

实验

现象

结论

A

将氯气通入品红溶液

溶液红色褪去

氯气具有漂白性

B

将铜粉加入1.0mol•L1

的Fe2(SO43溶液中

溶液变蓝,有黑色固体出现

金属Fe比Cu活泼

C

用坩埚钳夹住用砂纸仔细打磨过的铝箔在酒精灯上加热

熔化后的液态铝滴落下来

金属铝的熔点比较低

D

向盛有少量浓硝酸、稀硝酸的两支试管中分别加入一片大小相同的铜片

浓硝酸中铜片很快开始溶解,并放出红棕色气体;稀硝酸中过一会铜片表面才出现无色气体,气体遇空气变红棕色

浓硝酸氧化性强于稀硝酸

A:A  

B:B  

C:C  

D:D

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答案(点此获取答案解析)

D

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ESL TEACHER NEEDED IN SHANGHAI

Date updated:Oct 6,2016

Employer:Longman schools, Shanghai

Company type:

Private

Industry type:

Education / Training / Universities and Colleges

Work City:

Shanghai

Job Category:

English Teaching

Salary City:

>13000RMB

No. Hiring:

Unspecified

Work Experience:

2 years

Job Type:

Full Time

Qualifications

·A genuine interest in children, teaching, and professional development

·Open-minded, an adventurous spirit, and professional flexibility

·4-year bachelor's degree from an accredited university

·Native English speaker

·Passport issued by the USA, Canada, the UK, Ireland, Australia, and New Zealand

·Two years post bachelor degree teaching experience preferred

·Internationally recognized TEFL, CELTA, or TESOL certification

·Experience traveling internationally and / or working abroad preferred

Responsibilities

·Planning and delivering lessons to learners (ages 3.15)

·Using electronic media and courseware to teach English efficiently and effectively

·Evaluating student progress and providing ongoing guidance for improvement

·Participating in social activities with students organized by your school

·Maintaining regular office hours

Employment package

·Salaries:13,000rmb-16,000rmb per month (depending on experience)

·6,000 rmb sign on bonus (after probation — a time of training and testing when you start a new job)

·10,000rmb Accommodation Assistance Loan (overseas applicants only)

·2,000rmb relocation allowance (overseas applicants only)

·16 teaching hours and 10 office hours per week

·2 Day off per week

·Paid overtime for teaching

·Paid holiday & paid Chinese public holiday

·15-month Z working visa (foreign expert certificate)

·5000rmb flight allowance (paid upon contract completion)

·Comprehensive health Insurance & accident Insurance

·Accommodation assistant

·On-going professional teacher development and training program

·15 month contract (including 3 month's probation)