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题型：单选题题类：常考题难易度：普通

仁爱科普版九年级上Unit 2 Saving the earth. Topic 1 Pollution has causestoo many problems.同步练习1

People in the Northwest have too many trees, so sandstorm is always coming in many parts of China in spring.

A、cut off B、cut down C、cutting off D、cutting down

举一反三

I saw Bob when I passed the playground yesterday.

Yesterday, on my way to school, I saw a girl sadly.

I didn't see you at the meeting. Have you s{#blank#}1{#/blank#}up?

It took us one week _______________ this article _______________ by Mo Yan.

The students stood still with their eyes ________ the flag.

Tomorrow we'll go on a picnic. My mother is p{#blank#}1{#/blank#} some food for it.

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