太阳能反应器变废为宝，塑料垃圾制氢成功（语法填空）
Scientists at the University of Cambridge have created a special reactor. It uses sunlight ___1___ (turn) plastic waste and old battery acid into clean hydrogen. This is good news for ___2___ environment.
Every year, the world produces about 450 million tons of plastic. Only a small part of it ___3___ (recycle). Most plastic ends up in landfills or the ocean. Finding a ___4___ (good) way to deal with plastic waste is very important.
The new reactor works in two simple steps. First, the plastic is ___5___ (break) down by acid from used car batteries. This acid is usually dangerous and hard to deal with, ___6___ here it becomes useful. It helps to cut the long plastic molecules (分子) into smaller pieces. Second, a special powder called “catalyst (催化剂)” is added. When sunlight shines on the mixture, the catalyst helps turn one of the plastic pieces into hydrogen gas. Hydrogen is a clean fuel that only ___7___ (produce) water when burned.
The best part is that the catalyst does not use any expensive metals. It is cheap and can work for a long time — over 260 hours in the lab without ___8___ (stop). Also, the process creates other useful chemicals, like acetic acid (the main part of vinegar) and TPA, ___9___ can be sold. These byproducts (副产品) could help the recycling plant make money.
“We are not saying this will solve the whole plastic problem,” said Dr. Erwin Reisner, the leader of the study. “But it shows that waste can become a valuable resource. Using sunlight and thrown-away battery acid to get clean energy is a very ___10___ (promise) idea.”
The team is now working to make the technology larger so it can be used in the real world. If successful, your old drink bottle might one day help power a clean-energy car.