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¡¡¡¡You make up, go out of your house and work every day, but what will it ___1___ to live and work in space stations?
¡¡¡¡People live and work in space stations just like on earth. ___2___ astronaut in space stations goes to bed at night, then wakes up the next day and work again. But there are a few ___3___ because there is no gravity
£¨ÒýÁ¦£©. The astronauts can sleep ___4___ but they usually sleep in ___5___ bags.¡¡¡¡In order to keep in good ___6___, astronauts have to exercise after working. They're also able to take a shower ___7___ exercising. In their free time, they can read, and play games. They can also send e-mails to their friends and even ___8___. No one feels lonely.
¡¡¡¡Astronauts wear different kinds of clothes in space stations. But they don't change clothes as often as people do on earth.
¡¡¡¡Now we are building ___9___ space stations. That will help the common people ___10___ in space.
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¡¡¡¡¡¡Plants are very important ¡¡1¡¡¡¡¡¡ things. Life could not go ¡¡2¡¡¡¡ ¡¡if there were no plants. This is because plants can make food from air, water and sunlight. But animals and man cannot ¡¡3¡¡¡¡ ¡¡so. Animals get their food by eating plants and ¡¡4¡¡¡¡ ¡¡animals. Man gets its food by eating plants and animals too. ¡¡5¡¡¡¡ ¡¡animals and man ¡¡6¡¡¡¡ ¡¡plants in order to ¡¡7¡¡¡¡ ¡¡. This is why we find that there are so many plants around us.
¡¡¡¡¡¡If you look ¡¡8¡¡¡¡ ¡¡at the plants around you, you will find that there are many types of plants. Some plants are large, ¡¡9¡¡¡¡ ¡¡others are small. ¡¡10¡¡¡¡ ¡¡plants are green. There are two sorts£¨ÖÖÀࣩof plants: flowering plants and non-flowering£¨²»¿ª»¨µÄ£©plants.
¡¡¡¡¡¡Flowering plants have roots£¨¸ù£©,stems£¨¾¥£©,leaves, flowers and fruits£¨¹û×Ó£©. ¡¡11¡¡¡¡ ¡¡all the trees around us are flowering plants. Flowering plants ¡¡12¡¡¡¡ ¡¡make seeds£¨ÖÖ×Ó£©. The sends ¡¡13¡¡by the fruits. Some fruits have one seed, some have two, three or four, and some have many seeds. But a few fruits have no seeds ¡¡14¡¡¡¡ ¡¡. ¡¡15¡¡¡¡ ¡¡example of a fruit ¡¡16¡¡¡¡ ¡¡seeds is banana fruit.
¡¡¡¡¡¡Most non-flowering plants do not grow from seeds. They grow from spores£¨æß×Ó£©. Spores are small. Some spores are ¡¡17¡¡¡¡ ¡¡small and ¡¡18¡¡¡¡ ¡¡that they can float£¨Æ¯¸¡£©¡¡19 ¡¡¡¡ ¡¡the air. We may say that spores are quite different from seeds. When these spores ¡¡20¡¡¡¡ ¡¡on wet and shady£¨ÒõÁ¹µÄ£©places, they usually grow into plants.
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