1 EX Many parts of the world are losing important natural resources, such as forests, animals, or clean water. Choose one resource that is disappearing and explain why it needs to be saved . Use specific reasons and examples to support your opinion.  
　　Many natural resources are disappointed of being wasted on our planet every day. One of the most important resources we are abusing is our trees. Each year , hundreds of thousands of acres of trees disappear in countries all around the world . In some countries , these trees are used for fuel. In other countries , trees are destroyed to build housing developments and shopping centers. Saving trees has become a major cultural and economical issue in many of the world.
　　Trees are essential to our survival . They are a major part of the process of photosynthesis . Photosynthesis is the process in which green plants use carbon dioxide to produce oxygen ,and oxygen is something all of us need . The fewer trees there are ,the more this affects our ability to breathe.
　　Trees are also important in the development of many medicines. The mainstream medical establishment did not recognize this for many years. However , those who use natural medicines have always known how important trees are. Now scientists are agreeing with them. Many drugs come from the leaves of certain trees, along with other herds and plants.
　　In rural areas, farmers have always known how important trees are to soil conservation. This is why you’ll usually see trees lining a field . Tree rots help keep the soil in place, and are also a factor in water distribution deep beneath the ground .
　　Finally ,we should save trees from disappearing because they provide so much pleasure. ‘I think that I shall never see a poem as lovely as a tree,’ wrote a poet . That is the truth . A tall , stately tree is beautiful to look at, and pleasing to the soul . It is also a great place to find shade on a hot summer’s day. For practical and emotional reasons, we need to preserve our planet’s trees.   
　　2 AD Do you agree or disagree with the following statement ?A zoo has no useful purpose. Use specific reasons and examples to explain your answer.
　　Zoos are often controversial because many people believe they are necessary or even harmful .If properly managed, I feel that zoos have a lot of value. In fact, I believe zoos are useful in two main ways: educating the general public and advancing scientific research.
　　Zoos can be wonderfully educational places. They provide a safe, controlled environment to learn about a specific species. Children can feel safe exploring the world of the chimpanzee there, and adults can learn about and see types of birds they’ve never seen before . Unlike in the wild , there’s no worry of being physically harmed by an animal.
　　Zoos are also important for the research opportunities they provide. Research is safer and easier to conduct than in the wild. Scientists can feel secure in the confined area of the Zoo. For example, while conducting a medical experiment in an open field ,scientists have to worry about both the animal they have to worked with, and also other animals nearby .In zoos, however ,they need only worry about the research subject.
　　In the wilderness, animals are also much harder to track and monitor. Zoos make research less time-consuming and expensive. Long term follows-ups are easier too, since even with monitors, wild animals often are killed and disappear. In zoos, researchers can observe an animal’s entire life span.
　　Overall , I feel that properly managed zoos provide excellent opportunities for education and research, and are therefore very useful.

　　3 AD In some countries people are no longer allowed to smoke in many public places and office buildings. Do you think this is a good rule or a bad rule? Use specific reasons and details to support your position.
　　Not allowing smoking in public places and office building is a very good rule. I believe this for several reasons .Not only will banning smoking improve people’s health, it will also increase worker productivity and reduce conflicts.
　　We all know smoking is not healthy. Unfortunately, when smokers are able to smoke in public buildings, they can make other people sick . They may work with people who are allergic to smoking, for examples. In that case , the non-smokers have no choice unless they want to quit their jobs. They can only get sicker , which is unfair .Of course , banning smoking in public buildings and offices will please non-smokers. It will also improve the smokers’ health. They will have fewer opportunities to smoke, so they will smoke fewer cigarettes.
　　Banning smoking in office buildings can also increase worker productivity. Smokers won’t interrupt their work all the time to smoke. There will also be fewer worker absences. When smokers cut down the number of cigarettes, they will get fewer smoking related illnesses.
　　Finally, it is a good idea to ban smoking in public places and office buildings because a ban can reduce conflicts. Non-smokers tend to get annoyed and jealous because smokers have an excuse to take frequent breaks .The most significant conflict, however, is over whether smokers have a right to smoke in public . As we have already seen, non-smokers feel they are not always given a choice. If smoking in public is allowed , they will be forced to breathe harmful air. This may violate their rights, and non-smokers are angry with smokers because of it.
　　It seems clear that banning smoking n public places and office buildings is a good idea. It will reduce conflict and increase productivity. It will also benefit health of smokers and non-smokers alike. I believe that just about anything that improve our health is a good idea!
　　4 EX Plants can provide food, shelter, clothing ,or medicine. What is one kind of plant that is important to you or the people in your country? Use specific reasons and details to support your choice.
　　The coconut tree is a very important plant in my country. Coconut tree plantations are important sources of revenue ,food and shelter.
　　Our country earns a lot of money from the export of coconut tree products like copra, coconuts, coconuts oil , and coconut milk . This has been the main sources of our foreign exchange for over a century . In fact, many of the coconut plantations were planted by various colonial power and now, since independence, are run by our own citizens .
We not only export the food products of the coconut tree ,we eat them ourselves too. The coco is the basis of much of our national cuisine, we are famous for our curries made rich by coconut milk .We also use the oil to fry our foods as well as to add shine to our skin and hair.
　　The fronds of the coconut tree are also used to cover the walls and roofs of temporary shelters. The breezes pass through the fronds and cool the interior ,but the heavy rains, which fall daily , do not enter.
　　The coconut tree is a very versatile and useful plant .It is a tree that has served our country well.