题目内容：

    Chaka Salt Lake(茶卡盐湖)lies in Qinghai Province, China. It sits at an altitude(海拔)of about 3,100 meters and covers an area of about 105 square kilometers. It is rich in salt with a heavy salt bed close to the lake surface. That makes the lake a main source of salt in our country. When the weather is clear, the lake offers beautiful reflections(影像)of the blue sky.

That is why people call it "sky mirror".

Because of its wonderful views, the lake is seen as one of the "must-go" places in China.

The beautiful sunrise and sunset views are the most attractive. Every July, large numbers of visitors begin to crowd to (涌入)Chaka Salt Lake. And the situation usually lasts until the end of August. Because they just don't want to miss the best time to go there. It is believed that with the summer breeze (微风), breathing in the salty air is especially good for lungs (肺). If you want to go on a trip to the lake, the following tips may be helpful.

◆The salt in the lake can't be eaten directly.

◆Wear sunglasses and a hat because of the strong sunshine.

◆You can't stop taking photos, so you'd better take your camera with you.

◆ Prepare some medicine for the weak and the elderly so that they can deal with altitude sickness.

Travelling to such a beautiful world of salt with snowy mountains and green grass around, you will feel like you are in a fairyland.

1.Where does Chaka Salt Lake lie?

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2.What's the area of Chaka Salt Lake?

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3.What makes people see Chaka Salt Lake as one of the "must-go" places in China?

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4.When is the best time to visit Chaka Salt Lake?

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5.Why should people prepare medicine for the weak and the elderly?

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