Earth Hour(地球一小时) is a global event organized by World Wildlife Fund (WWF) and it is held on the last Saturday of March every year. It asks people to   26   their lights and other electrical appliances(电器) like computers for one hour. In this way, people can pay   27  attention to the climate(气候) change and know that it’s important to save the earth.
Earth Hour first  28   in Sydney in 2007. More cities around the world followed Sydney’s lead in 2008.   29   March 28, 2009, 88 countries and more than 4,000 cities joined Earth Hour. From 8:30 p.m. to 9:30 p.m., Beijing, Dalian, Hangzhou, Hong Kong and many   30   cities in China took the action, too.   31   shops closed and people used candles at home. The UN said that it  32   save the energy(能量).
The world seems to be a dark world   33   the lights are turned off. However, people are trying to do something to save the   34   in such beautiful “dark moment”. This year, WWF encourages people to make a small change for the environment every day. Now,  35   you join us?

A．turn on B．turn down C．turn up D．turn off

A．more B．little C．few D．less

A．started B．stopped C．comes out D．begins

A．In B．At C．On D．To

A．others B．other C．the other D．another

A．Thousand of B．Two thousands C．Thousands of D．Two thousand of

A．would help B．will help C．has helped D．helps

A．so that B．when C．until D．before

A．shops B．world C．cities D．earth

A．do B．could C．may D．are