从垂直高度来看，世界人口分布的不平衡性十分明显。海拔200米以下的陆地面积占27.8%，而居住在这一高度内的人口比重却占到56.2%，200米～500米高度的陆地面积占全部陆地的 29.5%，而居住在这一高度内的人口为24%，500米～1000米高度的陆地占总面积的19%，人口占11.6%。也就是说，世界人口90%以上是居住在海拔1000米以下的比较低平的地区。尽管目前世界上最高的永久性居民已达海拔5000米的高度(南美洲的安第斯山区和我国西藏)，最高城市也达到海拔3976米(波利维亚的波托西)。
居住在1000米以上高度的人口比重是多少？（）
A．10%
B．8.2%
C．11.6%
D．9.3%
参考答案：B
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| My elder sister Lisa is only four feet ten, but she has a great personality. I learned everything about 1 from her. She is 2 a brilliant businesswoman. Once she ran nine 3 at the same time just by herself. 4 she talked to her employees, she'd stand on a box. Thus she could look them straight in the eye and 5 connect with them. These days I work in my sister's restaurant. Of course, we quarrel with each other 6 , but I think it's 7 to be open and honest and let things out. 8 God has given us all kinds of senses, we should each have our own 9 and, of course, we can't always 10 with others. One day a woman 11 Vicky was helping me prepare a salad for a cooking class. "You forgot sugar and vinegar," Vicky pointed 12 . "They're used in most salad cookbooks." I 13 to her, "In my family, we don't 14 sugar and vinegar to our salad" She argued,"We do in my family, and our salad is very good." "Yeah? Well, 15 is great!" I shouted back. Back and forth we went 16 we both burst into tears. What are you doing? I asked myself. You became so angry just 17 a recipe! Then I hugged Vicky 18 and she hugged me right back. We've been best friends ever since. Be real; Make 19 with people; Look them in the eye; Tell them how you feel; Don't be afraid to say 20 you mean. When you let go of the feelings you hold inside, you'll be amazed at what comes back to you. | |||
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