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Culture unchangingly molds(影响) human biology. Culture encourages certain activities, discourages others, and sets standards of physical health and attractiveness. Sports activity, which is influenced by culture, help build phenotyep(具有共型的一类有机物). American girls are encouraged to pursue-and so, they do well in-competitive track and field, swimming, and diving. Brazilian girls are encouraged to avoid public activities. In Brazil fewer females swim, drive, and run than is the case in America. Culture standards of attractiveness also affect athletic activities. Americans nm or swim not just to compete but to keep trim(漂亮的) and fit. Brazil’s beauty standards accept more fat, especially in female buttocks and hips. Years of swimming mold an enlarged upper torso, a massive neck, and powerful shoulders and back. Successful women swimmers tend to be big, strong, hard and bulky, but Brazilian culture says that women should be soft. A Brazilian beauty should have big hips and buttocks rather than big shoulders. So Brazil seldom sends female swimmers or runners to the Olympics. The countries that produce successful female swimmers are the United States, Germany, and Russia or any other one but not Latin countries including Brazil. What is the main topic of the passage().
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Scientists are trying to make the deserts into good land again. They want to bring water to the deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is becoming desert all the time. Scientists may not be able to change the desert. Scientists think that people make deserts. People are doing bad things to the earth.Some places on the earth don’t get very much rain. But they still don’t become deserts. This is because some green plants are growing there. Small green plants and grass are very important to dry places. Plants don’t let the hot sun make the earth even drier. Plants don’t let the wind blow the dirt(土)away. When a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more easily. Deserts().
M: Come in, Madam. What’s the matter with youW: I don’t feel well, doctor. My head aches. And I have a sore throat (喉咙).M: Do you have a feverW: I think so.M: Well, let’s see. Put this thermometer (温度计) under your tongue.W: All right.M: Yes, you have a fever. I want to take a look at your throat. Open your mouth.W: What’s wrong with me, doctorM: Well, you have the flu. I’ll give you some medicine.W: When should I take the medicineM: Every four hours. I want you to stay in bed and rest. And drink plenty of water. You should come again in a day or two.W: Thank you, doctor. What seemed to be the woman’s trouble().
Scientists are trying to make the deserts into good land again. They want to bring water to the deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is becoming desert all the time. Scientists may not be able to change the desert. Scientists think that people make deserts. People are doing bad things to the earth.Some places on the earth don’t get very much rain. But they still don’t become deserts. This is because some green plants are growing there. Small green plants and grass are very important to dry places. Plants don’t let the hot sun make the earth even drier. Plants don’t let the wind blow the dirt(土)away. When a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more easily. Small green plants are very important to dry places because ().
Scientists are trying to make the deserts into good land again. They want to bring water to the deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is becoming desert all the time. Scientists may not be able to change the desert. Scientists think that people make deserts. People are doing bad things to the earth.Some places on the earth don’t get very much rain. But they still don’t become deserts. This is because some green plants are growing there. Small green plants and grass are very important to dry places. Plants don’t let the hot sun make the earth even drier. Plants don’t let the wind blow the dirt(土)away. When a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more easily. Which is the main idea of the first paragraph().
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