Water is very important to us. If you don t have water for three days, you will die. We can use water for flowers, swimming, washing and many different things. We use it to cook, make electricity, and put out fires and so on. We use millions of liters of water every day.
Do you know how does the water come to your home? It travels through water pipes. Some are long and wide but some are short and narrow. Then the water travels through the water pipes to the reservoirs. Then it travels through the water pipes to the river and to the special factories that purify the water. When the water is purified, we can drink it. Please don t leave garbage in the water on which we line, and keep the water clean.
2017届高考英语一轮复习学案:必修5 unit 15 Learning(北师大版)
2017届高考英语一轮复习综合模拟预测卷:(2)(北师大版)
2017届高考英语一轮复习课堂检测:unit 14 Careers(北师大版)
2017届高考英语一轮复习精品课件:必修1 Module 4 A Social Survey-My Neighbourhood(外研版)
2017届高考英语一轮复习课堂检测:unit 8 Adventure(北师大版)
2017届高考英语一轮复习综合模拟预测卷:(1)(北师大版)
2017届高考英语一轮复习学案:选修6 unit 17 Laughter(北师大版)
2017届高考英语一轮复习课堂检测:unit 21 Human Biology(北师大版)
2017届高考英语一轮复习学案:选修6 unit 16 Stories(北师大版)
2017届高考英语一轮复习课堂检测:unit 18 Beauty(北师大版)
2017届高考英语一轮复习课堂检测:unit 16 Stories(北师大版)
2017届高考英语一轮复习学案:必修5 unit 13 People(北师大版)
2017届高考英语一轮复习课堂检测:unit 6 Design(北师大版)
2017届高考英语一轮复习学案:必修1 unit 3 Celebration(北师大版)
2017届高考英语一轮复习学案:选修8 unit 22 Environmental Protection(北师大版)
2017届高考英语一轮复习学案:选修7 unit 21 Human Biology(北师大版)
2017届高考英语一轮复习课堂检测:unit 7 The sea(北师大版)
2017届高考英语一轮复习学案:选修7 unit 20 New Frontiers(北师大版)
2017届高考英语一轮复习课堂检测:unit 4 Cyberspace(北师大版)
2017届高考英语一轮复习课堂检测:unit 17 Laughter(北师大版)
2017届高考英语一轮复习学案:选修7 unit 19 Language(北师大版)
2017届高考英语一轮复习综合模拟预测卷:(8)(北师大版)
2017届高考英语一轮复习学案:选修6 unit 18 Beauty(北师大版)
2017届高考英语一轮复习学案:必修1 unit 2 Heroes(北师大版)
2017届高考英语一轮复习课堂检测:unit 10 Money(北师大版)
2017届高考英语一轮复习课堂检测:unit 3 Celebration(北师大版)
2017届高考英语一轮复习课堂检测:unit 13 People(北师大版)
2017届高考英语一轮复习综合模拟预测卷:(4)(北师大版)
2017届高考英语一轮复习课堂检测:unit 19 Language(北师大版)
2017届高考英语一轮复习课堂检测:unit 22 Environmental Protection(北师大版)
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