题型:阅读选择 题类:常考题 难易度:普通
广东省佛山市禅城区2020届九年级上学期英语期末试卷(含小段音频)
Caterpillars(毛毛虫)are cute. They star in children's books. They turn into pretty butterflies. And now it turns out they may hold the key to solving plastic pollution.
Like many great findings and inventions, the discovery of a caterpillar that eats plastic was made accidentally. Bertocchini, a biologist in Madrid, was cleaning her hobby beehives(蜂箱)and used a plastic shopping bag to collect the caterpillars which eat wax(蜂蜡). When she looked at the bag later, she was surprised to see it was full of holes. She decided to look into this plastic-eating wonders of caterpillars with her team.
They offered a plastic bag from a UK supermarket to a group of 100 wax-eating caterpillars. They began creating holes after 40 minutes; 12 hours later, they had reduced the mass of the bag by 92mg. While there have been other creatures that eat plastics, none of them have been able to do so better than these caterpillars.
"This discovery could be an important tool for helping to cut down the problem of plastic waste and save our oceans and rivers," Bertocchini said. "The caterpillar will be the starting point. Before using this finding in a practical way to solve plastic problems, we need to understand the chemical secrets behind the natural degradation(降解)of plastic. Something in the caterpillar一as well as the caterpillar itself—might play a role".
There are some persons' plans for the coming summer. You are welcome to post yours!
Name | Plan |
Emma | I usually teach English at a language school in summer. I often can't enjoy the summer because I am so busy. So this summer, I'm not planning to work. Instead, I'm going to have a proper summer holiday. I'm going to drive around Ireland with my friends. We are going to visit lots of beautiful beaches! |
Pamela | Last month, my friend Alfie and I had a crazy idea. We have decided to ride bikes from the south of England to the north of Scotland this summer. It's an 874-mile trip! It takes 10 to 14 days. I don't ride fast, and I want to enjoy visiting several places, so we plan to ride for four weeks. |
Jayden | Last autumn, I learned to dive (潜水), and I'm going to take a diving coach course soon. Then, I plan to teach diving this summer to make some money. In my free time, I won't stay in the UK. I want to fly to Egypt. I'll travel there alone. |
An E-mail
From: Ben and Emma To: John, Susan, Peter, Lily Subject : pen pals |
Hi everybody , We see your names on the Pen Friends list. You want to get e-mails from English children. So here we are! We live near Oxford(牛津),in the UK. We are 11 years old (Emma )and 10 years old (Ben) . We goto school in Oxford. There are 400 boys and girls between 8 and 13in our school. We have lessons from 9:00 a.m. to lunchtime. After lunch, we usually have lessons or sports. We have English, math, science, history(历史), art, P.E. and other subjects. Emma's favorite subjects are math and science. Ben's favorite subjects are art and music. He doesn't like math. There are three terms(学期) in a year, and we do different sports in each term. Autumn term: rugby(橄榄球) for boys, tennis for girls Winter term: football and hockey(曲棍球) Summer term: cricket(板球), swimming, tennis, and gymnastics(体操) We like sports but we're not good at any of them! At home we like reading books, cycling (Emma) and taking photos (Ben). Write and tellus about you and your schools. Emma and Ben |
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