二：语法和词汇知识（共20小题，每小题1分，满分20分）。6

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二：语法和词汇知识（共20小题，每小题1分，满分20分）。
6._________we must keep in mind is that we must protect water and use it wisely.

A．Why

B．What

C．Where

D．How

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As________tourist attraction，the Summer Palace does have________strong attraction to visitors from home and abroad.

A．the；/	B．the；a
C．a；/	D．a；the

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—Sorry，it’s already 6 o’clock.I have to be off for an appointment.
—OK.________.

A．It couldn’t be better	B．You really have me there
C．Let’s call it a day	D．Take your time

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Honesty is a virtue________greed is an evil，as the saying goes.

A．while	B．when
C．as	D．and

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Parents，of course，will do everything they could to________their children from harm.

A．defend	B．convince
C．overcome	D．reduce

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I know it’s normal for such a thing to happen，but we________it if we’d been more careful.

A．need have avoided	B．could have avoided
C．will have avoided	D．had avoided

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