题目内容

加入和氧化态产生副反应(配位反应或沉淀反应)的物质,使电对电极电位增加。

A. 对
B. 错

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I have an _____ day.Many students kept looking up their Wechat in class.Two students are even playing video games on their phones.

A. ordinary
B. awful
C. wonderful
D. terrific

Whatqualities doyouthinkagoodfriendshouldhave?

A. Being honest
Being generous orhelpful
C. Being caring
D. All of the above.

What are the ways to keep a conversation going?

A. Expressing agreement
B. Asking questions
C. Making guesses
D. All of the above

What are the important elements of a personal letter?

A. Date
B. Greeting
Content
D. Closing and Signature

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