17.The world is being covered by plastic.In China,the amount of plastic waste rose into 14 million kilograms last year,but only about 9% was recycled.Over 1.32 million kilograms of plastic found its way into the world's oceans,which caused serious pollution.Luckily,researchers have found a special kind of bacteria which can help break down plastic recently. The bacteria are so small that we need a microscope (顯微鏡) to see them.They can "eat" plastic by changing its chemicals into something that will help them grow.The secret to this is enzymes (酶).Bacteria uses enzymes to cause chemical changes. In 2012,in the decaying (腐爛的) leaves,scientists discovered an enzyme called LCC that slowly broke down PET plastic.Most people know PET plastic.It is used in water and soda bottles.Most PET is thrown away,but even when it is recycled,it can't be made into new bottles.Compared with other 100,000 enzymes,it was the best at breaking down PET. To improve LCC,scientists studied the enzyme and the way it broke down the PET.By testing thousands of small changes to the enzyme,they found a new kind of LCC.It can be alive at higher temperatures,eat PET very quickly and make most PET plastic reusable.Scientists were satisfied with the result.When the environment was just right,the new LCC was able to break down 90% of the PET in just ten hours.The old enzyme took about 20 hours and only broke down half of the PET.
(1)How many plastic products are recycled in China last year?
A.About 1.32 million kilograms. B.About 14 million kilograms. C.About 1.26 million kilograms. (2)Which statement is TRUE about the bacteria?
A.Bacteria can be seen with our eyes directly. B.Bacteria can't be used to break down plastic. C.Enzymes help bacteria change chemicals in plastic. (3)From Paragraph 3,we can know
. A.most PET plastic could be made into new bottles again B.a(chǎn)n enzyme called LCC was found in PET plastic in 2012 C.LCC was found the best at breaking down PET plastic (4)Compared with the old LCC,which is NOT the advantage of the new kind of LCC?
A.It can be alive at higher temperatures. B.It can make all the PET plastic reusable. C.It can break down PET plastic in a faster way. (5)Where can we probably read this passage?
A.In a storybook. B.In a science report. C.In an advertisement.
18.Dear Susan, How are you?I'm going to visit Hong Kong with Mum and Dad next month.We'll arrive on the second of August.it's so exciting!We can meet each other soon! I will spend a day in Ocean Park on the third of August.I know that you've visited Ocean Park many times before.Can you give me some advice on what to see in Ocean Park? I would also like to visit you at your home on the fourth of August.Are you free on that day?I've bought a present for you.I think you'll love it. By the way.would you like to go to Disney land with me?I really want to take some photos with you in Disneyland.You know ,I love the famous cartoon characters of Disney such as Snow White and Mickey Mouse very much.I know you love them too. When can you go to Disneyland with me?Please let me know.I'll stay until the ninth of August and go back to England on that day See you soon Love Lily (1)When will Lily arrive in Hong Kong?
A.On the second of August. B.On the third of August. C.On the fourth of August. D.On the ninth of August. (2)How long will Lily spend in Ocean Park?
A.Half a day. B.One day. C.One and a half days. D.Two days. (3)What will Lily do on the fourth of August ?
A.Buy a present. B.Visit Ocean Park. C.Go back to England. D.Visit Susan at her home. (4)What will Lily do in Disneyland ?
A.Take photos. B.Watch a cartoon. C.See a film of Mickey Mouse. D.Read the story of Snow White. (5)Lily wants to know
. A.if Susan has received her present B.when she will go back to England C.if Susan can meet her at the airport D.when Susan can go to Disney land with her
19.Do you want to learn about Chinese culture,meet new friends and show your artistic skills?Join in this year's Calligraphy(書法) and Painting Challenge!The theme is about the Mid-Autumn Festival and the Spring Festival. Works we want ? Write ancient or modern Chinese poems. ? Paint Chinese paintings,oil paintings,etc. ? You also need to make a video to share stories of your works. Submission time The Mid-Autumn Festival:From June 20,2022 to 12:00 p.m.jye.ai August 25,2022. The Spring Festival:From June 20,2022 to 12:00 p.m.jye.ai January 6,2023. All Chinese language lovers from around the world can join in it.There is no age requirement.But you must be a non-Chinese speaker.
(1)People who join in the competition can
. ①learn about Chinese culture ②meet new friends ③show their artistic skills ④read different stories A. ①②③ B. ①②④ C. ②③④ (2)The passage above may be a part of
26.This week,our topic is pollution.What are the answers to all of our pollution problems?We asked two experts to give their views. Forest Smith is a member of Green First,an environmental group. Our future on the Earth looks very bad.We are dumping waste on our land.We can't breathe the fresh air.The sea is polluted,too. I visited some relatives recently in a small village.They grow their own food and cycle everywhere.They are not wealthy,but they are happy and healthy. We must close the factories producing useless products.That will reduce rubbish and air pollution.We must recycle more,give up all cars,and improve public transport. A big problem is overpopulation in big cities.We must give up big cities and factories,and go back to a simple way of life. John Green is a scientist at a university. Things are not as had as Forest says.We'll have a bright future.We don't need to give up cars but we need to invent better,cleaner engines. This won't stop the problem of traffic jams.So we need better public transport.We should also recycle more. But some things are getting better.My sister returned last month after living abroad for five years.She sad, "Our neighbourhood doesn't look the same as before—it is cleaner and greener now." In a word,science has brought many improvements to our life.
Forest Smith:A member of an(1)
group
Our future on the Earth looks bad.
● We're(2)
waste on our land. ● The fresh air can't be breathed in. ● People (3)
the sea. ● The population in big cities is very (4)
.
What can we do?
●(5)
some factories will reduce rubbish and air pollution. ● We must recycle more and (6)
the public transport better.
Conclusion:We must go back to a simple way of life.
John Green:A(7)
at a university
We still have a(8)
future.
● Better and cleaner engines are (9)
because we can't give up cars. ● We also need better transport and to recycle more.
27.Have you ever heard of Tom Sawyer?He is the main (1)c
in the book The Adventures of Tome Sawyer.He and his brother live with their aunt.He is very naughty so his aunt often(2)p
him for doing wrong things.But he is very clever too.He can often (3)t
of good methods to solve all kinds of problems,and in this way,he has a lot of friends.You might have trouble (4)u
the book at first,and you also need to get used to the dialect (方言)in the 19th century.But go on reading,and you will enjoy yourself.Anyone who wants to be young again can get much (5)j
28."立身必先立德,無德無以立身。"作為祖國的未來,我們應(yīng)該立德為先,在校內(nèi)、校外表現(xiàn)優(yōu)秀。 請根據(jù)提示,寫一篇短文,號召同學(xué)們爭做優(yōu)秀好少年。 提示:(1)What are you (not) supposed to do at school and home? (2)How do you behave in public? (3)How do you feel if you make it? 要求:(1)短文須包含所有提示信息,可適當(dāng)發(fā)揮; (2)文中不得出現(xiàn)真實的人名、校名和地名; (3)詞數(shù)80左右 (開頭已給出,不計入總詞數(shù))。 參考詞匯:expected;polite;respect;traffic;litter (垃圾);noise How to Behave Well We teenagers are the future of our country.To be a great student is _______.