题型:阅读选择 题类:模拟题 难易度:普通
重庆九龙坡区2019届九年级下学期英语十校联考毕业暨升学模拟考试试卷(含听力音频)
Scientists in Britain and the United States have made a new kind of enzyme(酵素) that eats plastics(塑料). With its help, plastics can be turned into smaller parts and go away quickly.
Scientists believe that, in the future, it could solve the problem of plastic pollution.
The enzyme is able to break down PET, a form of plastic. PET was first made in the 1940s and is now widely used to make plastic bottles. It can remain in the environment for many years and pollute large areas of land and water. So it has always been a headache to deal with the waste from PET and other plastics.
The researchers made the discovery(发 现) while examining the structure of a natural enzyme in Japan. They found that the natural enzyme was helping to break down PET plastics. So, they
decided to make small changes to the enzyme by adding some amino acids(氨基酸). It made the natural enzyme's plastic-eating abilities work faster and better.
John McGeehan, one of the lead researchers, said, "We've made an improved enzyme. It's better than the naturl one. And we are trying to make more improvements to it." He went on."
The enzyme is not harmful to humans or animals, and it is friendly to the environment. So we are considering putting it into wider use."
The team is now trying to make the enzyme break down PET in large quantities(大量的). "We'll see that the plastic pollution may be stopped with this technology. However, there is still a long way to go," John McGeehan added.
A. Share a bit of yourself! B. Show strong personal qualities. C. But for many kids, it doesn't come easily. D. But it is important to get people's names right. E. Ask about school, sport, music, and other hobbies! F. Now over 20 schools give strong friendship classes. |
Do you like to make new friends at school? Making friends is an important skill for us to learn. {#blank#}1{#/blank#}
To teach kids friend- making skills, people in Australia started a project called URStrong. It gives kids classes on friendships to help them make friends. {#blank#}2{#/blank#} Here are some ways of making a new friend from the friendship classes.
Introduce yourself first. Look the person in the eye, smile and say," Hi! My name is ... What's your name?" After he or she answers, say something like," It's really nice to meet you." It is really as simple as that! {#blank#}3{#/blank#} If you get them wrong, they will feel sad!
Ask questions. {#blank#}4{#/blank#} But remember, you have to be a good listener before you can ask good questions.
Don't be shy. {#blank#}5{#/blank#} Then your new friends can get to know you! Soon enough, you will be the best of friends!
Enjoy something together. Try to find an activity you both like and ask the other person to play with you.
试题篮