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—What does PM 2.5 mean?

—It's a professional ________ indicating the condition of air pollution.

A．term B．item

C．number D．mark

One reason for her ________ for city life is that she can have easy access to places like shops and restaurants.

A．reference B．preference

C．performance D．consequence

Because of H7N9 bird flu, all the chicken markets in Shanghai have been closed and won't open until further ________.

A．sign B．symbol

C．contact D．notice

I have learned that it's taking ________ long time to become ________ person I want to be.

A．the; a　　　　　　 B．a; the

C．the; the D．/; a

．________ relation between China and Russia has developed steadily since Vladimir Putin was re?elected ________ president last May.

A．The; the B．A; the

C．The; / D．A; /

—________Beijing of 2012 saw its first snowfall in the month of November.

—Oh, it came as ________ surprise to us.

A．The; the B．The; a

C．/; a D．/; the

It is not so difficult to learn English well. ________ you need is listening, speaking, reading and writing it every day.

A．Everything B．All

C．Each D．Something

It makes good sense to buy a large packet because ________ will work out cheaper in the end.

A．it B．this

C．one D．they

Since my childhood I have found that ________ is more attractive than reading, which is my favorite.

A．everything B．nothing

C．something D．anything

(2013·浙江高考)Mary worked here as a ________ secretary and ended up getting a full?time job with the company.

A．pessimistic　　　　　　　 B．temporary

C．previous D．cautious