Read the article and select the best answer. Article: Rhinos are big and can be dangerous. They are also shy and seldom seen. Once there were hundreds of rhino species, but today there are only five. One ancient rhino called Indricotherium was the largest land mammal that ever lived. It was 5m high at the shoulders, and 8.5m long-- twice the size of today's biggest elephant! The living rhinos are still big, averaging 2-3m long and weighing up to 3,600kg. To see all five species of living rhino you would need to do a bit of exploring. First you might visit Africa for a look at the white rhino and the black rhino. They live in Africa's dry woodlands and grasslands. Then you could head to India and Nepal for a look at the Indian rhino. It lives in the high grasslands near rivers, where you have to ride an elephant to find one. Finally you might travel to the rainforests on the islands of Indonesia to see the Sumatran and Javan rhinos. These are the smallest and rarest rhinos in the world and extremely difficult to find. Most rhinos are gentle and timid .They have a bad reputation for being very , but that may be partly because they get frightened easily. Also, they have poor eyesight. They rely on their strong sense of smell to tell them a stranger is approaching, but if the wind is blowing the wrong way, they may not know someone is there until it's too late. Rhinos can be found only in their habitats, which is why habitat destruction has caused rhino populations to decline. As they disappear from certain places, their absence leads to many changes to the landscape. For example, black rhinos in Africa only eat shrubs and small trees, pruning the plants and limiting their growth. Many other species benefit from this, and as rhinos disappear, so do many other animals sharing their habitat. Bushes and trees take over the land and force species like the antelope to leave in search of food. In a short time the whole habitat has changed. Question: The white rhino can be found in _ . Options: A: Indonesia's island B: Nepal's high grasslands C: Africa's dry woodlands and grasslands D: India's high grasslands near rivers
C

Read the article and select the best answer. Article: For years scientists have been worried about the effects of air pollution on the earth's natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse. Indoor air pollution can cause a person to feel tired, to suffer eye pain, headache and other problems. Some pollutants can cause breathing disorders, diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution. People have paid more attention to the problem now. It is true that when builders began making houses and offices they did not waste energy. To do this they build buildings that limited the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to let out harmful gases. As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building--green plants. Scientists do not really know how plants control air pollution. They believe that a plant's leaves absorb or take in the pollutants. In exchange the plant lets out oxygen through its leaves and tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and healthier place. Question: Some kind of indoor pollution can be found in _ . Options: A: every modern house B: every old house C: all kinds of houses D: all kinds of offices
A

Q: Read the article and select the best answer. Article: Hadrian's Wall Hadrian's Wall was built, beginning in 122 AD, to keep Roman Britain safe from attacks from the Picts. The wall, starting from the North Sea to the Irish Sea (from the Tyne to the Solway), is about 73 miles long, 10 feet wide, and 15 feet high. In addition to the wall, the Romans built a system of small forts housing up to 60 men every Roman mile along its whole length, with e towers very 1/3 Roman mile. 16 larger forts holding from 500 to 1000 soldiers were built into the wall, with large gates on the north face. Israeli West Bank barrier The Israeli West Bank barrier is a barrier under construction by the State of Israel along and within the West Bank. Upon completion, the barrier's total length will be nearly 700 kilometers. The barrier is built mainly in the West Bank. The Berlin Wall The Berlin Wall was the physical boundary between West Germany and East Germany. The Berlin Wall was built in the dead of night in 1961 and for 28 years kept East Germans from escaping to the West. Its destruction (in 1989) was celebrated around the world. Conwy's Town Walls Conwy's Town Walls are an ancient defensive project around the town of Conwy in North Wales. The walls were built between 1283 and 1287. They are 1.3 kilometers long and include 21 towers and three gate houses. The project was completed by large quantities of workers and cost around PS15,000. Today the walls form part of the UNESCO world heritage site . Question: We know from the passage that Hadrian's Wall _ . Options: A: is about 15 feet wide B: has about 60 small forts C: is seen from the Tyne to the North Sea D: has 16 larger forts built into it
A: D

Read the article and select the best answer. Article: A man living absolutely alone in a desert or forest is free from other people; but he is not absolutely free. His freedom is limited in several ways. Firstly, by the things around him, such as wild animals or cliffs too steep to climb. Secondly, by his own needs: he must have sleep, water, food and shelter from extreme heat or cold. Lastly, by his own nature as a man: disease may attack him, and death will certainly come to him sooner or later. When men live together, on the other hand, protection against wild animals is easier and they can work together to get food and build shelters; but each man has to give up some of his freedom so that he can live happily with the others. When men become organized into very large groups, and civilization develops, it is possible to get freedom from hunger, thirst, cold, heat and many diseases, so that each person can live a happier life than he could if he were living alone; but such a society can not work successfully unless the freedom of each human being is to some extent limited so that he is kept from hurting others. I am not free to kill others, nor to steal someone else's property, nor to behave in a way that offends against the moral sense of the society in which I live. I have to limit my own freedom myself so that others will not limit it too much: I agree to respect the rights of others, and in return they agree to respect mine. The advantages of such an agreement are great: one man can become a doctor, knowing that others will grow food, make clothes and build a house for him, in return for the work he does to keep them healthy. If each man had to grow his own food, make his own clothes, build his own house and learn to be his own doctor, he would find it impossible to do any one of these jobs really well. By working together, we make it possible for society to provide us all with food, clothes, shelter and medical care, while leaving each of us with as much freedom as it can. Question: The author suggests that when men live together _ . Options: A: they will have no freedom and have to help others. B: they can help each other protect against wild animals. C: they have to work for their own food and shelters D: everyone's happiness is at the expense of other people's freedom.
B