阅读理解

　　As space science develops, man has learned more and more about space．Space is not only amazing but also dangerous．While working in space, spacemen are facing danger as well as success．

　　Spacemen are working in space, they are in danger of radiation from the sun and other stars, which is bad for their health．The damage(危害)done by radiation won’t be discovered until their children or even grandchildren are born．Some special medicine may work a little, but there is no really helpful medicine．

　　Space junk(垃圾)is also thought a great danger to spacemen．It’s reported that there are 9,000 man-made things flying in space．About 30％ of these are satellites, 10％ are spaceships, and the rest are space junk．An explosion(爆炸)in 1996 made a cloud of 300,000 fragments, each at least 4mm in size, and even a small piece of these knocked against a spaceship window and did some damage．Scientists are watching and reporting any possible danger all the time．They are working on helpful ways to do with space junk．

　　Although space is really dangerous, it interests everyone on Earth．In the near future, it may become usual for people to spend a few days in a space hotel．We may even choose to leave Earth and live in space in a few years．So we should care for space and do something to help improve the space environment．

语法选择

　　Although English is not as old as Chinese, it is 　　1　　 by many people around the world every day．English speakers are always creating new words, and we are often able to know where most words come from．

　　Sometimes, however, no one may really know where a word comes 　　2　　．Did you ever think about why hamburgers are called hamburgers, especially when they are not made with ham(火腿)?About a hundred years ago, some men 　　3　　 to America from Europe．They came from a big city in Germany 　　4　　 Hamburg．They did not speak good English, but they ate good food．When some Americans saw them 　　5　　 round pieces of beef, they asked the Germans what it was．The Germans did not understand the question and answered,“We come from Hamburg．”One of these Americans owned a restaurant, and had an idea．He cooked some round pieces of beef like those 　　6　　 the men from Hamburg ate．Then he put each between two pieces of bread and started 　　7　　 them．Such bread came to be called“hamburgers”．Today“hamburgers”are sold in many countries 　　8　　 the world．

　　　　9　　 this story is true or not, it certainly is interesting．Knowing why any word has certain meaning is 　　10　　, too．This reason, for most English words, can be found in any large English dictionary．

阅读理解

　　Although English is not as old as Chinese, it is spoken by many people around the world every day．English speakers are always making up new words, and we are often able to know where most come from．

　　Sometimes, however, no one may really know where a word comes from．Did you ever think about why hamburgers are called“hamburgers”, especially when they are not made with ham(火腿)?About a hundred years ago, some men went to America from Europe．They came from a big city in Germany called Hamburg．They didn't speak good English, but they ate good food．When some Americans saw them eating round pieces of beef, they asked the Germans what they were．The Germans didn't understand the question and answered,“We come from Hamburg．”One of these Americans owned a restaurant, and had an idea．He cooked some round pieces of bread with beef in them and started selling them．Such bread came to be called“hamburgers”．Today,“Hamburgers”are sold in many countries around the world．

　　Whether this story is true or not, it certainly is interesting．Knowing why any word has a certain meaning is interesting, too．This reason, for most English words, can be found in any large English dictionary．