We can all contribute to a greener world．Just follow these ten golden rules: ●Stop getting junk mail．Billions of junk mail can be sent every year．Half of it is never opened．Get-your name off mailing lists．If 100,000 people stopped getting junk mail today, it would save 150,000 trees a year． ●Stop reading newspapers．All over the world, millions of newspapers are thrown away every day, 44 million newspapers in the USA alone —that's half a million trees a week．Either recycle your newspapers or read the hews online． ●Buy clothes made from organic materials．Conventional cotton farming seriously pollutes the environment, most of which uses ch  emical pesticides （农药） and fertilizers． Organic is better!●Switch to solar energy．In one day, the sun will provide enough energy to power the planet．Why aren't we using it? ●If you have to drive, share the ride．Most cars in the USA have only one occupant．Also, 25 percent of car rides are less than 1．5 kilometres．Get out and walk! ●Unplug your PC, TV and VCR．Simply turning them off isn't enough．Sets left on standby are still using 25 percent of their power． ●Hold on to your balloons．Helium-filled balloons which fly away usually end up in a lake or river, where they can choke aquatic (水生的) creatures．Sav  e your balloons and use them again．Or better still, don't use them at all．●Feed the birds．Wild birds need food, especially in v/inter when other sources can be scarce．The greater the range of foodstuffs you put out for them, the more types of birds you will attract． ●Plant a garden at your school．Learn the connection between the land and the table．Plant vegetables to eat, flowers to admire and trees to improve the air． 小题1:. What is the main purpose of the passage?
．The underlined expression "left on standby" in the sixth rule means__ __．
．Which of the following will NOT protect trees from being cut down to make paper?
|