题目

魏源在《海国图志》中主张“师夷长技以制夷”,同时又认为“万里一朔,莫如中华”。据此可以认为魏源( )  A.推动了东方国家对西方世界的了解  B.引发了19世纪40年代中国社会学习西方的热潮  C.开始关注西方世界的同时仍然保持文化优越感  D.在遭受西方列强侵略时不失民族气节 答案：解析:C “师夷长技以制夷”反映了魏源等人主张向西方学习的思想,“万里一朔,莫如中华”又反映了他们认为中华文化优于西方。故本题选C。 About 97% of the world’s water is salty and is found in our oceans and seas. But, as we can’t drink sea water, how can it be important? Every part of our seas and oceans contains an amazing number of animals and fish that live at different ocean depths. Most of the different species of animals and fish depend on simple plants for their food. These simple plants called algae (海藻) drift near the surface of the ocean and use sunlight to turn carbon dioxide and water into food and oxygen. In fact, algae produce over half of the oxygen people breathe. How important sea water is! Each plant or animal in our seas and oceans is an important link in a food chain. The algae are eaten in large amounts by microscopic animals, which are in turn consumed by larger animals. These food chains are delicately balanced. The bad news about the food chains in the oceans is that they are under threat because of man. People once thought that the oceans were so big that it didn’t matter if we dumped rubbish into them or caught huge quantities of fish and whales for food. But we now know this is not true and fish stocks in the oceans have started to drop. Thankfully, the world is taking steps to protect the future of our oceans by introducing international agreements to protect marine habitats. Most countries have introduced fishing restrictions to protect fish stocks in the oceans and new techniques are being pioneered to cope with pollution. Finally, the importance of protecting oceans is being made known to more people. This is just the beginning of a long process to protect the oceans for our future. We depend on the oceans for fish which are an important part of the human diet. How important sea water is! 46. Which of the following is the proper order of the food chain? A. small animals→algae→microscopic animals→large animals→man B. algae→microscopic animals→large animals→larger animals→manC. small animals→algae→large animals→microscopic animals→manD. microscopic animals→algae→large animals →larger animals→man47. People used to think that the rubbish thrown into the sea ________. A. wouldn’t harm the fish in the sea   B. would change the balance of the food chain C. would be broken down in the sea   D. wouldn’t do much harm to the sea48. From the passage, we learn that _________. A. most fish and sea animals live at the surface of the seasB. it is very difficult to break the balance of a food chainC. excessive fishing has caused the decrease in fish stockD. it won’t be long before the problems concerning oceans will be solved49. Which of the following is NOT a way being used to protect oceans? A. The use of international agreements.   B. Forbidding fishing to protect fish stocks.C. The use of new techniques.          D. Raising people’s awareness of the need to protect oceans.50. What would be the best title of the passage? A. The importance of seawater.B. Life in the oceans.C. How to protect food chains.D. How to deal with seawater pollution.