B
Caka Salt Lake(茶卡盐湖) is in Qinghai Province. It sits
at an altitude(海拔) of about 3,100 meters and covers an area
of 105 square kilometers. It is rich in salt, with a thick salt
layer(层) close to the lake surface. That makes the lake an
important source of salt in our country. When the weather is
clear, the lake provides beautiful reflections(映象) of the
blue sky. That is why people call it the "Sky Mirror".
Because of its amazing views, people see the lake as one
of the "must-see" places in China. The best time to visit is
from July to August. It is believed that breathing in the
humid(潮湿的) air with salt content(含量) may be good for
lung health.
If you want to go on a trip to the lake, the following tips
may be helpful.
★Don't eat the salt from the lake directly.
★Wear sunglasses and a hat because of the ultraviolet
rays(紫外线).
★Prepare some medicine for the weak and the elderly or
those who may suffer from altitude sickness.
When you travel to such a beautiful world of salt
surrounded by snowy mountains and green grassland, you
will feel like you are in a wonderland.
If you have a chance, why not go there and enjoy the
amazing place?
()21. Why do people call Caka Salt Lake the "Sky Mirror"?
A. Because it provides beautiful reflections of the blue sky.
B. Because the ultraviolet rays over the lake are strong.
C. Because it has a high altitude.
D. Because it has rich salt.
()22. What makes the lake an important source of salt in China?
A. The area of the lake.
B. The weather of the lake.
C. The altitude of the lake.
D. The thick salt layer close to the lake surface.
()23. What can you do if you visit Caka Salt Lake?
A. Eat the salt from the lake directly.
B. Wear warm clothes and a hat.
C. Breathe in the humid air with its salt content.
D. Prepare some medicine for the women and the kids.
()24. What does the writer think of Caka Salt Lake?
A. Dangerous. B. Beautiful.
C. Hot. D. Common.
()25. What can we get from the text?
A. Caka Salt Lake is a big lake in South China.
B. Caka Salt Lake is a wonderful place to visit.
C. The best season to visit Caka Salt Lake is spring.
D. Caka Salt Lake has a warm winter.

21. A
22. D
23. C
24. B
25. B

21. 根据第一段"When the weather is clear, the lake provides beautiful reflections(映象) of the blue sky. That is why people call it the "Sky Mirror"."可知，茶卡盐湖能清晰倒映蓝天，因此被称为“天空之镜”，故选A。
22. 根据第一段"It is rich in salt, with a thick salt layer(层) close to the lake surface. That makes the lake an important source of salt in our country."可知，靠近湖面的厚盐层让它成为我国重要的盐源，故选D。
23. 根据第二段"It is believed that breathing in the humid(潮湿的) air with salt content(含量) may be good for lung health."可知，参观时可以呼吸含盐分的潮湿空气；A选项与提示"Don't eat the salt from the lake directly."相悖；B选项原文提示是戴太阳镜和帽子防紫外线，未提及穿暖和衣服；D选项原文是为虚弱者、老人或可能高原反应的人准备药物，不是妇女和孩子，故选C。
24. 文中多次提到茶卡盐湖的美景，如"beautiful reflections""amazing views""beautiful world""wonderland"，可见作者认为它很美丽，故选B。
25. 文中提到茶卡盐湖是中国“必看”景点之一，且描述了它的美景，说明它是值得游览的好地方；A选项它在青海，不属于华南；C选项最佳游览时间是7-8月（夏季），不是春季；D选项文中未提及冬季温暖，故选B。