Nowadays, the food we eat seems to have great effects on our health. Although science has made enormous steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well, especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is not a new discovery. In 1945, about 68 years ago, government researchers realized that nitrates, commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this, penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration (FDA) has tried repeatedly to control these procedures, the practices continue. What are nitrates used for? A) They preserve flavor in packaged foods. B) They preserve the color of meats. C) They are the objects of research. D) They cause the animals to become fatter.
B
(Question)
Across countryside, non-food crops are growing alongside wheat.Some are used in new alternatives to plastics and other materials, but others will simply be burned. Burning crops is becoming more popular because it is good for the planet.Doing so is also cheaper than burning fossil fuels.As more land is devoted to non-food crop production, the economics of crops for fuel are likely to become even more favorable. Humans have been burning such biomass--organic materials from plants or animals-- since they discovered fire.But that burning fossil fuels could have catastrophic consequences has brought biomass back into fashion. Even allowing for emissions of carbon dioxide from fuel used in planting, harvesting, processing and transporting biomass fuel, replacing fossil fuel with biomass can typically reduce greenhouse gas emissions by more than 90 percent. Power stations around the world are experimenting with forms of biomass to add to their coal or oil, with encouraging results.Indeed, power companies could profit by turning to biomass, especially when the subsidies many governments offer for using renewable energy are taken into account. Farmers can benefit from growing biomass.In Europe, the reduction of subsidies for certain crops is exposing farmers to market forces.Instead of being paid for whatever they produce, farmers must seek a clear demand for their product.Many believe that the demand for alternatives to fossil fuels could be just such a driver. But while biomass offers a variety of potential alternatives, the world's infrastructure has developed around burning fossil fuels to such a stage that switching to biomass involves a change in conception that many companies have not accepted. Also, there are problems with using biomass.Although most coal-fired power stations could take a small amount of their fuel from biomass without significant adjustment, few are built to run on biomass alone.Burning some forms of biomass also causes environmental problems.Oils and waste can be smelly, while wood... What do we know about biomass? A) It is a useful way of burning crops. B) It is plant and animal matter used to provide power. C) It is a new alternative to be used widely. D) It is a popular approach to fighting against pollution.
(Answer)
B
Ques: It is exciting to visit different places. As you travel, you will see beautiful sceneries typical of the region. Besides, you can meet and make friends with people of different color1s and races. Finally, you can get to know the customs and living habits of the local people. Today people are so fond of travelling that tourism has become one of the fastest growing industries in most countries. The main reason why people travel is, perhaps, for pleasure. For example, having worked hard throughout the weekdays, people will find a widened trip to the nearby mountains or beaches for a relaxation. For another example, spending an annual holiday travelling abroad is an especially satisfying experience for those who do not have much of an opportunity to be away from their homelands. When people return from their travel, they will generally feel fresh and energetic, ready to work harder. Travelling is also one of the best means for learning. You may have read or heard about something but you can never get an accurate picture of it until you see it for yourself. _ . Furthermore, if you are a careful observer, you can learn much during your travel about the geography, biology, and history of the places you visit. No matter how well educated you are, there is always a lot for you to learn through travelling. The knowledge _ from travel, as you have found in your life, is no less valuable than that from any influential reference books. By saying "Seeing is believing", the author means that _ A) you cannot believe it until you see the real object by yourself B) you will have a clear idea about something when you see it personally C) you will know what has happened to something when you see it D) you will have no doubt when you see something by yourself
Ans: B
Question: This is a doubtful age, but although our faith in many of the things has weakened, our confidence in the curative (,) properties of the bottle medicine remains the same. This modern faith in medicine is proved by the fact that the annual drug bill of the Health Services is increasing to huge figures and shows no signs at present of stopping to rise. The majority of the patients attending the medical out-patients departments of our hospitals feel that they have not received enough treatment unless they are able to carry home with them some tangible curative in the shape of a bottle of medicine, a box of pills, or a small jar of ointment , and the doctor in charge of the department is only too ready to provide them with these requirements. There is no quicker method of treating of patients than by giving them what they are asking for, and since most doctors in the Health Services are overworked and have little time for offering time-consuming and little-appreciated advice on such subjects as diet, right living, and the need for abandoning bad habits etc. Nor is it only the ignorant and ill-educated person who has such faith in the bottle of medicine. It is said that Thomas Carlyle (a famous Scottish writer), when he heard of the illness of his friend, went off immediately to visit him carrying with him in his pocket what remained of a bottle of medicine formerly used for a slight illness of Mrs. Carlyle's. Carlyle was entirely ignorant of what the bottle in his pocket contained or the nature of the illness from which his friend was suffering, but a medicine that had worked so well in one form of illness would surely be of equal benefit in another, and comforted by the thought of the help he was bringing to his friend, he rushed to Henry Taylor's house. History does not relate whether his friend accepted his medical help, but probably he did. The passage mainly tells us that _ . A) we are in a skeptical age B) people's faith in the bottle of medicine has not weakened in the modern age C) there are some problems in modern medical service D) patients have a tendency to put their own will on doctors
Answer:
B