You can．be proud of yourselves，even if you can only make one or two of these green changes．The goal here is to limit carbon dioxide and other greenhouse gases，which are closely associated the big problem of global—warming．
| Strategy l：Bring your own cup |
| You’ll get a l0一cent discount，and it’s one less paper cup to end up in a dustbin． The store won’t create more waste when they throw away a cup． |
| Strategy 2：Turn off your computer |
| When in standby mode，your PC is still using energy．Turning off a monitor for 40 hours a week may only save$5 a month，but it reduces C02 by 750 pounds． |
| Strategy 3：Reuse plastic bags |
| Instead of throwing away l00 billion plastic bags a year，try and get a second，third，or tenth use out of them．Better yet，next time you shop，try a reusable ba9．You’re reducing pollution The amount of oil it would take to make just l4 plastic bags would run your car for one mile． |
| Strategy 4：Use recycled paper in the bathroom |
| Most of the toilet paper we use is made from trees found in forests previously untouched by humans．If every household replaced one roll of toilet paper with a recycled one，424,000 trees would still be standin9．Look for copper towels too． |
| Strategy 5：Buy energy—efficient appliances（电器） |
| Replace the old fridge with an Energy Star appliance and you’ll use l5 percent less energy．It might be a little expensive to buy，but you’ll save money on your electricity bills and help the environment．If we all used one Energy Star appliance at home．it would be like plantin9 1.7 million acres of new trees． |
1．What is the best title for the passage?
A．Strategies to Save Money
B．Ways to be Earth—Friendly
C．Strategies to End Global-Warming
D．Ways to Limit Carbon Dioxide
2．According to the writer，what will happen if our PC is switched off when not in use?
A．It will help．to reduce a great deal of CO2．
B．It will help to save a large amount of money．
C．It will save the amount of oil that runs your car for a mile．
D．It will be like plantin9 1．7 million acres of new trees．
3．Which strategies suggest recycling or reuse of things?
A．Strategies l＆3． B．Strategies 2&5．
C．Strategies 3&4． D．Strategies 4&5．
4．What benefits do these strategies have in common?
A．They all help reduce the use of energy．
B．They all cut down the amount of the use of paper．
C．They all result in producing less greenhouse gases．
D．They all aid to preserve our trees and forest．
5．How many pounds of carbon dioxide does the monitor give off in an hour?
A．5 pounds． B．150 pounds．
C．8 pounds． D．18．75 pounds．