Earth Hour started in Sydney on March 31st, 2007. It calls on families and buildings to tum off the lights from 20:30 to 21:30 on the last Saturday night of March. In 2007 more than 2.2 million homes and businesses turned off their lights.

A year later, on March 29, Earth Hour 2008 became a global activity and was supported by 50 million people from thirty-five countries. On March 28, 2010, over 2,100 cities in another eight countries took part in it. Earth Hour came to China on that day, too.

In 2012 in China, there were many cities taking part in this activity, especially some large cities, such as Beijing. Shanghai…Many citizens consciously (有意识地) turned off lights in the hour. And without lights, they could also enjoy themselves. In colleges some students held some activities to make all the students leave their dormitories. It was 20: 30, Beijing time.

Some people in Beijing were having a nice talk with their friends. In Shanghai some people were taking a walk with their families or friends. And in Ningbo some young people were holding a party in a park, singing and dancing. The people from the three cities felt very relaxed.

Earth Hour has a variety of activities, but the final goal is the same, that is focusing on (聚焦) climate change and protecting the environment for individuals.

根据短文内容完成下列任务。
【小题1】回答问题。
What is the passage mainly about?
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【小题2】完成下列句子。
(1) In ______, Earth Hour became a ______ activity and in 2010, ______ countries took part in it
(2) Without lights, people ______ ______ ______ _____.
(3) The final goal of Earth Hour is focusing on ______ and _____ the environment for individuals.
【小题3】翻译划线句子。
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【小题4】猜测同义.The underlined word “variety” means ______ in Chinese.