．Peoplehaveplantedalotoftreesa

．People have planted a lot of trees and grass in order to ____ wind and sand in the desert．

A．hold down

B．hold up

C．hold back

D．hold out

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相关试题

We need to strike a ______ between the needs of the community and the rights of the individual.

A．silence

B． difference

C．balance

D．weakness

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We ______ while Mr. Evan read the exam results.

A．held our breath	B． wasted our breath
C．caught our breath	D．took our breath

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You may ______ your teachers for help when you have problems.

A．turn up

B． turn down

C．turn to

D．turn off

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Was it______ Tom’s carelessness______ your keys were lost?

A．because; which

B． for; what

C．because of; that

D．since; why

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He saved the drowning boy that winter, and was______ a hero for his courageous deeds.

A．honored

B． honored as

C．honored with

D．honored for

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