Making greener choices, from the food you eat to the way you travel, can improve your health．A recent article advises people should try low–carbon (低碳) lifestyles which could be the most important contribution to yourself, even the earth．Some guidelines follow:
1．Use your own power rather than oil whenever you can     
Burning oil in your car makes pollution like carbon dioxide (CO2) that causes global warming．Cutting down on driving and using your own two legs helps cut global warming pollution and helps reduce weight problems over time without dangerous diets or surgery．
If all Americans used foot instead of engine as daily exercise during normal travel, we could reduce our oil dependence by more than a third．Besides, by using a push mower(剪草机) instead of a power mower to cut your lawn, you can also cut up to 80 pounds of CO2 per year! And you’ll get a great workout!
2．Drop the bottled water, drink tap (自来水)     
Drinking plenty of water is important during hot weather or when exercising．You may think bringing bottled water with you can be both convenient and harm-free to the environment．But, you may change your mind if you see the truth below in 2006, 30 billion plastic water bottles were made, which used the amount of more than 17 million barrels(桶)of oil–enough to fuel more than one million cars for a year, and produced more than 2.5 million tons of carbon dioxide．
If you have worries about your tap water, clean it regularly! The truth is that tap water is no worse than bottled water ant it saves much money．
3．Choose foods carefully
There are some general ways you can follow that are good for you and the planet:
a．Eating less meat and more grains and vegetables helps reduce the need to cut down forests to grow the food for animals
b．Buying local food may be environmentally–friendly．Locally grown foods often use much less oil in transport than the foods coming from somewhere far away, which would help reduce CO2 amount．
For more information, you may consult http://www.edf.org/
1．What benefit can people make if they walk more but drive less?
A．More pollution will be made during the process．
B．There will be no obvious effect on reducing the amount of carbon dioxide．
C．Every year, more than 30% of the oil can be saved, which will help weaken global warming．
D．People’s weight will stay the same, and they still need to go on a diet to get thinner．
2．Why should we change our preference to bottled water?
A．Bottled water contains more good things for our health．
B．Tap water is not clean enough for people to drink．
C．Bottled water is more expensive than tap water for its better quality．
D．Tap water is as good as bottled water, which wastes so much resource during its production．
3．If you mean to protect the environment, you will ________．
A．often buy food from foreign countries        B．seldom eat meat for dinner
C．usually drive to work and home               D．never boil tap water to drink
4．Which of the following statements is TRUE?
A．Low–carbon lifestyles bring more harm than benefit to nature．
B．Man’s daily life activities have no effect on the changes of the environment．
C．What you eat can not only be good for your health, but also for the health of the earth．
D．The choice of food is completely personal, which won’t be important for nature at all．