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《Writing》集体备课PPT课件优质课下载
5minutes
②The factors that cause land to be desert are .
A. cutting down trees
B. digging up grass
C. climate changes
D. all of the above
because of
desertification
Let’s conclude
The sandstorm has become worse as a result of d__________. It happens because of _____________, _______________ and _____________.
The reasons of the sandstorms
esertification
climate changes
cutting down trees
digging up grass
③ Which of the following doesn’t belong to the bad effects of the sandstorms?
A. It has a bad influence on the traffic
B. It’s frightening and dangerous for the cyclers.
C. People can stay at homes
D. It’s bad for people’s health
dangers
Sandstorms in Asia
When it comes to the sandstorm, it has been a ___________ for many Asian countries for centuries.
First of all, sandstorms are strong ____ carrying ____.
Sandstorm has become worse as a result of d___________. It happens because of ____________, _______________ and _____________.