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Đoạn A nói về vấn đề nóng lên toàn cầu, đoạn B nói về nạn chặn cây phá rừng tự nhiên, đoạn C nói về ô nhiễm không khí, đoạn D nói về sự tuyệt chủng loài. Đây đều là các vấn đề về môi trường => chọn a.
Tạm dịch:
a. Các vấn đề về môi trường: Chúng là gì?
b. Bảo vệ môi trường: Nó quan trọng như thế nào?
c. Các giải pháp môi trường: Chúng thực tế như thế nào?
Môi trường chúng ta sống đang phải đối mặt với nhiều vấn đề nghiêm trọng. Chúng ta cần nhận thức rõ những vấn đề này để có thể tìm cách bảo vệ thiên nhiên.
A. Sự nóng lên toàn cầu là sự gia tăng nhiệt độ trung bình của khí quyển trái đất. Đó là một trong những vấn đề lớn nhất mà con người phải đối mặt ngày nay. Nó có thể gây ra những hậu quả nghiêm trọng như mực nước biển dâng cao, băng tan ở hai cực và các hiện tượng thời tiết khắc nghiệt như lũ lụt hoặc sóng nhiệt.
B. Một vấn đề môi trường khác là chặt phá rừng tự nhiên. Việc mất rừng có thể có tác động tiêu cực đến môi trường. Nó có thể làm hư hại môi trường sống tự nhiên của nhiều loài động vật và khiến động vật hoang dã gặp nguy hiểm. Nó cũng có thể phá hủy đất tự nhiên và dẫn đến biến đổi khí hậu.
C. Ô nhiễm không khí cũng là một vấn đề nghiêm trọng. Nguyên nhân chủ yếu là do khí thải từ xe cộ, máy móc hoặc nhà máy. Khi những khí độc hại này kết hợp với nước trong không khí, chúng sẽ tạo thành mưa hoặc tuyết, có thể gây hại cho mọi dạng sống. Ngoài ra, vấn đề này còn dẫn đến hiện tượng nóng lên toàn cầu và biến đổi khí hậu. Nó cũng là nguyên nhân chính gây ra các bệnh về đường hô hấp hay thậm chí là ung thư phổi.
D. Trên khắp thế giới, số lượng các loài động vật có nguy cơ tuyệt chủng đang tăng lên. Nhiều con trong số chúng biến mất vì ô nhiễm và biến đổi khí hậu. Ngoài ra, còn vì con người săn bắt và giết động vật một cách bất hợp pháp và đánh bắt quá nhiều cá cùng một lúc. Điều này đang làm đảo lộn sự cân bằng tự nhiên của các hệ sinh thái, có thể gây hại cho tất cả các sinh vật sống và không sống.
11. We have to work hard ______
A. because we are forced to
B. to make our material life better
C. to make ourseves purposeless
D. all are correct
1. Beside money,______________
A. we can get many other benefits from work
B. we can get some salary from work
C. we sometimes feel very meaningless
D. we can not contribute anything to our country
14. what motivates us to work harder?.________
A. Good job
B. Good pay
C Good way
D. Good skills
15. Without working, one’s life is_______
A. better
B. more confident
C. self-reliant
D.meaningless
,Put the verbs in brackets in their correct form
1, If we (not) don't on electricity, there will be power cuts
2, I hope he (finish) will finish his homework before we (get) get back
3, If we sit too far away from the screen I (not be) won't be able to see the film
4, Listen to those people! What langauge are they (speak) speaking?
5,It is an awful fim. It (be) is the worst film that I ever (see) have seen
6,Khanh usually (play) plays football with his friends after school, but yesterday he (not play ) didn't play as he was tired
7,After three days of rain, I'm glad the sun (shine) shines again today
8, ___ I know from my experience that (gain)___ a good knowledge of a foreign language, one must work hard at it every day.
9, I (repaint) repainted the walls. They lock great! The room (be) is much lighter now.
10, Someone (steal) will steal your car if you leave it unlicked
11, If he (wash) washes my car , I'll give him $10
12, They'll be very angry if she (make) makes any more mistakes
13, If you are late, they (not let) won't let you in.
14, If lend you $10, when will you (repay) repay me?
15, If I find your passport, I (telephone) will telephone you at once
16,He will ruin his eyes if he (read) reads in bad light
17, If I tell you a secrect, will you (promise) promise not to tell it to anyone else?
18, If I see him, I (give) will get him a lift
19, If he (be) is late, we'll go without him
2,Give the correct form of the words in brackets to finish the letter
Dear Kay,
Isabella and I are having the (good) best holiday of our life! We are in Vinabliss Resort, one of the (lovely) most lovely islands in the Eastern Sea. Although it is much (small) smaller than Vinaland, there seems to be (much) more to do than in Vinaland. Moreover, the people here seem to be (friendly) more friendly than those on other islands. We are staying in the (moden) more modern hotel I have ever seen. It is far(comfortable) more comfortable than any other and it is even (big) bigger than the world-famous Calton hotel .The (near) nearest beach is (little) less than a hundred metres away, so we can swimin a lot. It's really good and I want you to be here with us.
Love,
Maltida
3,Choose a suitable word from the box put in each blank to finish the passage
| from | means | in | waste | possible |
| wind | should | green | However | who |
Much of our waste, especially waste (1) from factories, electric-poweres stations, the chemica indusrty and heavy industry, is very dangerous. Fish die (2) in the lakes, rivers and seas; forest trees die, too. Much of this dangerous (3) waste goes into the air and is carried by the (4) wind for great distances.
The Earth is our home. We (5) should take care of it, for ourselves, and for our children and grandchidren. This (6) means we have to keep our enviroment (7) green and clean. The importance of this task is pointed out by ecologists-the scientists (8) who study the relations between living things and the enviroment . (9) However , each of us must do everything (10) possible to keep the land, air and water clean
| trees | metal | protect | damage | recycle | enviroment |
| danger | rubbish | save | animals |
11, Some factories recycle empty bottles and cans
12,We shouldn't damage forests.
13, It's important to save our skin from harmful effects from the sun
14, Metal, paper and glass can recycle
15, We should plant more trees in our city
16, We have to do everything to protect the environment
17, Some animals in the world are in danger now
18, Don't throw rubbish in the streets
19, People are doing a lot of things to damage the environment
20, We are destroying wild animals and plants
4, Join the pairs of sentences, using the suggestions given in brackets
1, I must ring john. i won't forget, I hope.(I hope I....)
=> I hope I won't forget to ring John
2, His uncle helped him. He was able to finish his course.(Because....)
=> Because his uuncle helped him, he was able to finish his course
3,I think we should go ahead. No one disapproves of the plan.(As..)
=> As no one disapproves of the plan , we should go ahead
4, It was raining heavily. They continued to play tennis. (Although ...)
=> Although it was raining heavily , they continued to play tennis
5, "Ambulance" is written backwawrds. You can read it in the mirror (....so....)
=> "Ambulance" is written backwawrds so you can read it in the mirror
Help me
PAPER RECYCLINGA Paper is different from other waste produce because it comes from a sustainable resource: trees. Unlike the minerals and oil used to make plastics and metals, trees are replaceable. Paper is also biodegradable, so it does not pose as much threat to the environment when it is discarded. While 45 out of every 100 tonnes of wood fibre used to make paper in Australia comes from waste paper, the rest comes directly from virgin fibre from forests and plantations. By world standards, this is a good performance since the worldwide average is 33 percent waste paper. Governments have encouraged waste paper collection and sorting schemes and at the same time, the paper industry has responded by developing new recycling technologies that have paved the way for even greater utilization of used fibre. As a result, industry’s use of recycled fibres is expected to increase at twice the rate of virgin fibre over the coming years.
B Already, waste paper constitutes 70% of paper used for packaging and advances in the technology required to remove ink from the paper have allowed a higher recycled content in newsprint and writing paper. To achieve the benefits of recycling, the community must also contribute. We need to accept a change in the quality of paper products; for example, stationery may be less white and of a rougher texture. There also needs to support from the community for waste paper collection programs. Not only do we need to make the paper available to collectors but it also needs to be separated into different types and sorted from contaminants such as staples, paperclips, string and other miscellaneous items.
C There are technical limitations to the amount of paper which can be recycled and some paper products cannot be collected for re-use. These include paper in the form of books and permanent records, photographic paper and paper which is badly contaminated. The four most common sources of paper for recycling are factories and retail stores which gather large amounts of packaging material in which goods are delivered, also offices which have unwanted business documents and computer output, paper converters and printers and lastly households which discard newspapers and packaging material. The paper manufacturer pays a price for the paper and may also incur the collection cost.
D Once collected, the paper has to be sorted by hand by people trained to recognise various types of paper. This is necessary because some types of paper can only be made from particular kinds of recycled fibre. The sorted paper then has to be repulped or mixed with water and broken down into its individual fibres. This mixture is called stock and may contain a wide variety of contaminating materials, particularly if it is made from mixed waste paper which has had little sorting. Various machineries are used to remove other materials from the stock. After passing through the repulping process, the fibres from printed waste paper are grey in colour because the printing ink has soaked into the individual fibres. This recycled material can only be used in products where the grey colour does not matter, such as cardboard boxes but if the grey colour is not acceptable, the fibres must be de-inked. This involves adding chemicals such as caustic soda or other alkalis, soaps and detergents, water-hardening agents such as calcium chloride, frothing agents and bleaching agents. Before the recycled fibres can be made into paper they must be refined or treated in such a way that they bond together.
E Most paper products must contain some virgin fibre as well as recycled fibres and unlike glass, paper cannot be recycled indefinitely. Most paper is down-cycled which means that a product made from recycled paper is of an inferior quality to the original paper. Recycling paper is beneficial in that it saves some of the energy, labour and capital that go into producing virgin pulp. However, recycling requires the use of fossil fuel, a non-renewable energy source, to collect the waste paper from the community and to process it to produce new paper. And the recycling process still creates emissions which require treatment before they can be disposed of safely. Nevertheless, paper recycling is an important economical and environmental practice but one which must be carried out in a rational and viable manner for it to be useful to both industry and the community.
i. Process of paper recycling
ii. Less threat of waste paper to the environment
iii. Collection of paper for recycling
iv. Sources of paper for recycling
v. Bad sides of paper recycling
vi. Contribution of community to recycling paper
Your answer:
1. Paragraph A ...........iii. Collection of paper for recycling............
2. Paragraph B ..........vi. Contribution of community to recycling paper.............
3. Paragraph C ...........iv. Sources of paper for recycling............
4. Paragraph D ............i. Process of paper recycling...........
5. Paragraph E ...........v. Bad sides of paper recycling............
21 Nature is in danger and needs our help
22 Because planting trees will save birds and other animals
23 To prove that we have so many unnecessary things we do not use
24 People have to reconsider their views of life and promote healthy and ecologically friendly lifestyle
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