- 阅读理解。No air means death. Although we can't see it, there is air around us. So air is everything and it gives lif...
- 阅读理解。Most of us lead unhealthy lives; we spend far too much sitting down. If in addition we are careless aboutou...
- 阅读理解。Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a newstudy h...
- 阅读理解。Could you stand the noise of a street-sweeping truck going up and down the street outside of your housethre...
- 阅读理解。In many societies, there is often greater acceptance of light skin than dark skin. Light skin may be seenas...
- 阅读理解。Illegal removal of coral (珊瑚) along Sri Lanka's coastline increased the amount of destruction on theislan...
- 阅读理解。If you are a male and you are reading this, congratulations: you are a survivor. According to statistics,yo...
- 阅读理解。The weather is getting hotter. You are thirsty playing basketball or riding home from school. A cold drinkm...
- 阅读理解。Trees are useful to man in three important ways: they give him wood and other useful things, they give himc...
- 阅读理解。The World Health Organization raised the pandemic (流行病) flu alert (警戒) to six, the highest level,which...
- Read the article, and fill in the blankets with the words given.A. avoided B. bother C. frequently D. accumulatingAB....
- 完形填空。In the past, man did not have to think about the protection of his environment. There were few people onthe...
- 阅读理解。Millions of years ago there were many types of dinosaurs on earth. Most dinosaurs were plant-eaters.The Apa...
- 阅读理解。Animals are natural resources that people have wasted all through our history.Animals have been killed for ...
- 阅读理解。Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Manypeople on the island ha...