题干

联合国确定2017年“世界水日”的宣传主题是“Wastewater(废水)”.我国纪念2017年“世界水日”和“中国水周”活动的宣传主题为“落实绿色发展理念,全面推行河长制”.下列做法正确的是( )

A:工业废水的任意排放,不会污染水体

B:保护水资源,禁止使用化肥、农药

C:城市浇花使用喷灌、滴灌技术

D:富含氮、磷的生活污水直接排放

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答案(点此获取答案解析)

C

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Canada Day

                                                                  

                                                                                                                              

      Since 1982, July 1st has been officially known as Canada Day. Canadians of all ages take part in this festival across the country.
  Canada Day is the year's biggest national party. In many towns and cities, the government organizes a lot of events, often outdoors. These include parades(游行), concerts, festivals, firework displays and ceremonies for new Canadian citizens(公民). The celebrations often have a patriotic mood. Canada's national flag, a symbol for Canada Day, can be seen everywhere and a lot of people paint their faces red and white, which are Canada's national colors. The celebrations in Ottawa, Canada's capital city, are especially grand and exciting.
  In the province of Quebec, many home rentals(租赁)start on July 1st and last for exactly one year, and many people in Quebec spend Canada Day moving from one house to another. So in Quebec, Canada Day is also known as Moving Day.
  Many organizations, businesses and stores are closed this day. Only some bookstores, ho spitals and gas stations may be open. Post offices are closed, too. As Canada Day falls in the Canadian summer holiday period, all schools are closed as well. In some areas, special services are provided for large events. The concerts, parades and festivals may cause some traffic jams.