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师梦圆初中英语教材同步科普版九年级上册Section A下载详情
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减少;减轻

sand

sandstorm

change into

desert

human being

although

reduce

They do harm to our health in many ways .

air pollution

light pollution

litter

water pollution

soil pollution

noise pollution

sandstorms

Do you know how sandstorms come into being?

The boy and girls are

talking about ________.

different types of sandstorms

the reasons for sandstorms

sandstorms in different cities

1b Listen to 1a and choose the best answer.

Focus on the main idea of the conversation when you listen for the first time.

B

1. The weather is fine and the wind is blowing

lightly. ( )

2. A lot of rich land has changed into desert

because people have cut down too many trees.

( )

教材