The concept of solar power satellites, or SPS, first put forward in the 1960s, is still not widely known by the general public. For example, at many public exhibitions about energy, SPS is not even mentioned. This is mainly because very little money has been spent on SPS research There are people who claim that SPS is unrealistic - because launch costs are much too high today; or because it is too far away. So why do we believe that it is important to continue to do researches on SPS? The reason is very simple. Humans are going to need huge amounts of electric power in coming decades. Within 50 years the world population is expected to double, while economic growth will continue around the world, especially in the poorer countries. But existing energy sources already face serious problems. They are limited; they are polluted; they are dangerous. So 50 or 100 years from now, where is our power going to come from? Nobody knows. And so we believe that new large-scale possibilities should be studied further. We must remember that humans have some choices concerning our future. To some extent we can choose the direction in which our civilization develops. And choices that are made in the coming decades - such as the energy sources that we will or will not use, will have major, long-term meaning for human life on earth. We believe that if research continues to show that SPS is environmentally and economically attractive, SPS will open the door to a much more attractive future for human civilization than any ground-based energy source, and one that the public will support and that young people will find challenging and exciting. Furthermore energy from SPS can be readily used in developing countries, as the SPS 2000 project will show, thus aiding economic development worldwide. In addition, by creating large commercial fund for space engineering, SPS will open the frontier of space to economic development, thus creating a limitless new field for the growth of the world economy. Which of the following statements about SPS is TRUE? A) The research on SPS started in the 1960s is still not appreciated by the public. B) The research is showing SPS can benefit environment and economy at present. C) The energy from SPS is now being used in some developing countries. D) The public don't know about SPS because little time is devoted to the research.
A
When a tornado touched down in a small town nearby, many families were left completely destroyed. Afterward all the local newspapers carried many human-interest stories featuring some of the families who suffered the hardest. One Sunday, a particular picture especially touched me. A young woman stood in front of an entirely shattered mobile home, a depressed expression twisting her features. A young boy, seven or eight years old, stood at her side, eyes downcast. Clutching at her skirt was a tiny girl who stared into the camera, eyes wide with confusion and fear. The article that went with the picture gave the clothing sizes of each family member. With growing interest, I noticed that their sizes closely matched ours. This would be a good opportunity to teach my children to help those less fortunate than themselves. I taped the picture of the young family to our refrigerator, explaining their difficulty to my seven-year-old twins, Brad and Brett, and to three- year-old Meghan. " We have so much. And these poor people now have nothing," I said."We'll share what we have with them." I brought three large boxes down from the room upstairs and placed them on the living room floor. Meghan watched seriously, as the boys and I filled one of the boxes with canned goods and foods. While I sorted through our clothes, I encouraged the boys to go through their toys and donate some of their less favorite things. Meghan watched quietly as the boys piled up discarded toys and games. "I'll help you find something for the little girl when I'm done with this," I said. The boys placed the toys they had chosen to donate into one of the boxes while I filled the third box with clothes. Meghan walked up with Lucy, her worn, faded, much-loved rag doll hugged tightly to her chest. She paused in front of the box that held the toys, pressed her round little face into Lucy's flat, painted-on-face, gave her a final kiss, then laid her gently on top of the other toys. "Oh, Honey," I said."You don't have to give Lucy. You love her so... What's the best title for this passage? A) The Greatest Love B) A Beautiful Heart C) True Generosity D) A Precious Gift
C
Q: The word "conservation" has a thrifty meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such a good condition that others may also share the enjoyment. Our forefathers had no idea that human population would increase faster than the supplies of raw materials: most of them, even until very recently, had the foolish idea that the treasures were "limitless" and could "last forever". Most of the citizens of earlier generations knew little or nothing about the complicated and delicate system that runs all through nature, and which means that, as in a living body, an unhealthy condition of one part will sooner or later be harmful to all the others. Fifty years ago, nature study was not part of school work; scientific forestry was a new idea; wood was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-term climatic cycles in relation to proper land use; even the word "conservation" had nothing of the meaning that it has for us today. For the sake of ourselves and those who will come after us, we must now set about correcting the mistakes of our forefathers. Conservation should be made part of everybody's daily life. To know about the water table in ground is just as important to us as a knowledge of the basic math formulas . We need to know why all watersheds need the protection of plant life and why the running current of streams and rivers must be made to give their full benefit to the soil before they finally escape to the sea. We need to be taught the duty of planting trees as well as of cutting them. We need to know the importance of big, grown trees, because _ In a word, it should be our goal to restore as much of the original beauty of nature as we can. According to the author, the greatest mistake of our forefathers was that _ . A) they had no idea about scientific forestry B) they had little or no sense of environmental protection C) they were not aware of the importance of nature study D) they had no idea of how to make good use of raw materials
A: B
(Q).
On the night of July 6, 1943, a plane took off from an Air Force base in England to stop German fighters over the English Channel. Piloting the plane was Captain Thomas Nash. Looking westward, Nash saw twelve orange lights in a row, moving at a very high rate of speed. Thinking they might be a new German weapon, he swung the plane around and headed directly for the lights, but they disappeared. Captain Nash may have been the first to see such orange lights but he wasn't the last. His experience was repeated many times by pilots during World War II both in England and Far East. What were they? No one knows for sure, but there is an interesting theory to explain them. According to this theory, the orange lights are space animals---animals specially adapted to life in the upper atmosphere just as some living things are adapted to life at the bottom of the sea. These space animals, the theory says, live so far up in the atmosphere that they are not in sight from the earth. They feed partly on the air and partly on energy from the sunlight. Being almost pure energy themselves, their body shine at night. During the day, however, they are invisible. Before World War II, continues the theory, there was little radiated energy on the earth's surface. Then came the development of rockets, nuclear power stations and something like that. The space animals are attracted to these kinds of energy of food. At night when there is no energy from the sunlight, they come down into the lower levels in search of a meal. They may even float into the range of human eyesight. This explains the fact that they have been sighted many times from the earth since 1943. The main idea of this passage is that _ . A) Captain Nash saw twelve orange lights traveling with great speedks5u B) Captain Nash may have been the first to see lights in space C) the orange lights are space animals according to a theory D) the secret of nature can be explained sooner or later
(A).
C