[主观题] For thousands of years, the Grand Canyon area has been continuously inhabited by Native
Americans who built settlements within the canyon and its many caves.

1、[主观题]Another great feature of the Badanjilin Desert is its singing sand dunes. When
wind blows, the sounds the dunes make are different from each other due to
differences in humidity(湿度), temperature, wind speed and environment.

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2、[主观题]In the heart of Badanjilin desert, a lonely temple on the shores of a lake is
surrounded by sand hills.

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3、[主观题]In addition,the Badanjilin Desert is considered as the "King of Sand Hill"and has
been appraised as the most beautiful desert of China by Chinese National Geography

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4、[主观题]The complex chains of dunes are the most unique of scenery here, which cover 83
percent of the desert.

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5、[主观题]In the Hexi Corridor(河西走廊), a strategic 1,600- kilometre chain of oases that
separates the Badain Jaran Desert from the Tengger Desert, sand is claiming 8 to
10 metres of land a year.

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