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[2009年，第39题]已知电对的标准电极大小顺序为：E(F2／F-)＞E(Fe3+／Fe2+)＞E(Mg2+／Mg)＞E(Na+／Na)，则下列离子最强的还原剂为( )。

A. F-
B. Fe2+
C. Na+
D. Mg2+

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Directions: This week you have looked through a journal and get to know that there is a position in a computer company. A programmer is needed. Write a letter to its personnel department, and 1. show your desire for the position; 2. describing your qualification; 3. and express your wish for an interview. You should write about 100 words and do not sign your own name at the end of the letter. Use "Li Ming" instead. You do not need to write the address.

Questions 13 to 15 are based on the conversation you have just heard.

A. Comprehensive schools do not offer quality education.
B. Parents decide what schools their children are to attend.
C. Public schools are usually bigger in size than private schools.
D. Children from low income families can’t really choose schools.

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Questions 13 to 15 are based on the conversation you have just heard.

A. He is interested in science courses.
B. He attends a boarding school.
C. He speaks French and German.
D. He is the brightest of her three kids.

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(操作员：李会计；账套：103账套；操作El期：2014年1月18日)1月18 日，采购C材料，欠大沈信息有限公司货款234000元，请录入应付单。应付科目：2202金额：234000对方科目：1401—03金额：200000对方科目：2221—01-02金额：34000

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[2009年，第39题]已知电对的标准电极大小顺序为：E(F2／F-)＞E(Fe3+／Fe2+)＞E(Mg2+／Mg)＞E(Na+／Na)，则下列离子最强的还原剂为( )。

A. F- B. Fe2+ C. Na+ D. Mg2+

Questions 13 to 15 are based on the conversation you have just heard.

Questions 13 to 15 are based on the conversation you have just heard.

(操作员：李会计；账套：103账套；操作El期：2014年1月18日)1月18 日，采购C材料，欠大沈信息有限公司货款234000元，请录入应付单。 应付科目：2202金额：234000对方科目：1401—03金额：200000对方科目：2221—01-02金额：34000

A. F-
B. Fe2+
C. Na+
D. Mg2+

(操作员：李会计；账套：103账套；操作El期：2014年1月18日)1月18 日，采购C材料，欠大沈信息有限公司货款234000元，请录入应付单。应付科目：2202金额：234000对方科目：1401—03金额：200000对方科目：2221—01-02金额：34000