15．Just about everything you do leaves a"carbon footprint （碳的足迹）"．For example，when you travel in a taxi，the car gives off carbon dioxide （CO2） into the air．Carbon dioxide is a greenhouse gas．Greenhouse gases make the earth become warm．To protect our environment，we need to leave less of a"carbon footprint"．
How big is your carbon footprint？To get an idea，take a look at the following numbers．
*TV sets and DVD players produce 723kg of CO2 a year．
*If you use your dryer machine five times per week，you produce 185kg of CO2 per year．
*If you take an eight-minute shower every day，you produce 616kg of CO2a year．
Surprised？Well，here's how you can work to reduce it：
Eating
*Each week，choose a day not to eat meat．Meat uses up lots of energy because it takes a long
time to produce．
*Do not waste food．Ask to take food home from restaurants if there's any left．
At home
*Save energy by using efficient light bulbs．Turn off the lights when you leave．
*Take short showers rather than baths．
*Dry your clothes in the sun instead of in a dryer machine．
At school
*Only print things out when necessary，and print double-sided．
*Don't use disposable （一次性的） cups or boxes．Take your own cups and lunchboxes to school．
任务型阅读：根据短文内容，填写下列表格．
0 117988 117996 118002 118006 118012 118014 118018 118024 118026 118032 118038 118042 118044 118048 118054 118056 118062 118066 118068 118072 118074 118078 118080 118082 118083 118084 118086 118087 118088 118090 118092 118096 118098 118102 118104 118108 118114 118116 118122 118126 118128 118132 118138 118144 118146 118152 118156 118158 118164 118168 118174 118182 159627
How big is your carbon footprint？To get an idea，take a look at the following numbers．
*TV sets and DVD players produce 723kg of CO2 a year．
*If you use your dryer machine five times per week，you produce 185kg of CO2 per year．
*If you take an eight-minute shower every day，you produce 616kg of CO2a year．
Surprised？Well，here's how you can work to reduce it：
Eating
*Each week，choose a day not to eat meat．Meat uses up lots of energy because it takes a long
time to produce．
*Do not waste food．Ask to take food home from restaurants if there's any left．
At home
*Save energy by using efficient light bulbs．Turn off the lights when you leave．
*Take short showers rather than baths．
*Dry your clothes in the sun instead of in a dryer machine．
At school
*Only print things out when necessary，and print double-sided．
*Don't use disposable （一次性的） cups or boxes．Take your own cups and lunchboxes to school．
任务型阅读：根据短文内容，填写下列表格．
| How much CO2do they produce every year？ •TV sets and DVD players used a （81）year：723kg •Dryer machines used five times a week：185kg •An eight-minute shower every day：616kg |
| How to make a lighter carbon footprint？ •Each week，choose a day not to eat （82）meat． •Don't （83）wastefood．Take food home if there's any left when you eat out． •（84）Use efficient light bulbs to save energy． •Take short showers rather than baths． •Dry your clothes in the（85）sun． •Use（86）double-sided of paper when you print． •Take your own cups and lunchboxes to school． |
