题型:阅读选择 题类: 难易度:普通
浙江省台州市玉环市2023-2024学年九年级上学期1月期末英语试题
①"Hey, want to do something great with old soft drink cans?""Sure, let's use them to go to the moon!"
②I know that sounds crazy. After all, you can't build an Apollo rocket from old soda cans. However, if you recycle enough cans, you can save as much energy as there is inside a real Apollo rocket. Enough power to reach the Moon!
③Soft drink cans are made of aluminum(铝). Making this metal requires a lot of energy. Aluminum begins as bauxite ore(铝土矿). The ore must be extracted(采掘), crushed(粉碎), and smelted(炼取). Producing soft drink cans needs about 1% of all the electricity used in the USA. Americans use more than 100 billion soft drink cans every year!
④Can we do better? Yes, we can, by recycling. While it takes lots of energy to produce new aluminum, it takes very little energy to turn old aluminum into new products. The metal is simply shredded(撕碎), melted(融化) and recast(再铸) into blocks(大块). By recycling, we can produce 20 soft drink cans using the same energy it would take to make just 1 new can.
⑤Nationwide(在全国), about 100,000 cans get recycled every minute. To be exact, in 90 minutes, the energy saved by rècycling is: E gained by recycling=2000,000 joules(焦耳, 能量单位)*9000, 000cans=18 trillion.
⑥That's a lot of energy. What can we do with that much energy? Can we reach the moon? It does sound crazy. But do you know how much energy do we need to send a rocket to the moon?
15.7 trillion.
⑦Now, compare two values for energy. See? The energy saved by recycling old soft drink cans is more than enough energy to send a rocket to the Moon. And we didn't even need a whole year of nationwide recycling—— just 90 minutes of recycling did it!
⑧Isn't it a fascinating way to think about recycling? Yet each time you save an empty soft drink can, it's almost like you' re helping to send a racket.
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