—WhatdoesPM2.5mean?—Itsaprofes

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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

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Chongqing is larger than ________city in China.

A．the other

B．any other

C．any

D．all the other

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________I’m concerned, we are going to take an exam in a month.

A．As long as

B．As far as

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--Thank you for your help.
-- _________.

A．With pleasure.	B．No thanks.
C．It’s my pleasure.	D．I didn’t help you much.

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He put forward a good idea ________ gave us hope.

A．that

B．what

C．that what

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Rather than ____on a crowded bus, he always prefers _____a bike.

A．ride; ride	B．riding; ride
C．ride; to ride	D．to ride; riding

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