英语阅读能力提升word -dictionary 3.pptVIP

Dictionary You can guess a word meaning from C-context, S-structure, and D-dictionary. Now we will deal with “D” how to make use of dictionary. How to use a dictionary? The essential method: scanning Now guess the meaning of the pictures and the words first with the skill of prediction, then with the help of dictionary. Bird Flu This year a new strain of winter flu is being billed as a potential killer. Eight years after first jumping to humans in Hong Kong, the bird flu has landed in Europe. If it mutates, experts fear a pandemic. strain ??noun [C]1 a particular type or quality:A strain of Puritanism runs through all her work.2 an animal or plant from a particular group whose characteristics are different in some way from others of the same group:Scientists have discovered a new strain of the virus which is much more dangerous. bill sb as sth phrasal verb [usually passive]to describe someone in a particular way in order to advertise them:The young author was billed as the new Beckett. mutate ??verb [I] 1 to develop new physical characteristics because of a permanent change in the genes. These changes can happen naturally or can be produced by the use of chemicals or radiation:These bacteria have mutated into forms that are resistant to certain drugs.2 to change from one thing or type of thing into another:Jon has mutated from an awkward teenager into a sophisticated young man. pandemic ??adjective SPECIALIZED(of a disease) existing in almost all of an area or in almost all of a group of people, animals or plants:In some parts of the world malaria is still pandemic.pandemic ??noun [C] SPECIALIZEDa pandemic of influenzaan influenza pandemic Language Tips 1 Epidemic: a regional, relatively short outbreak of a disease Pandemic: a highly fatal, global, often years-long, outbreak Language Tips 2 If a friend in your maths class is coughing on Monday and by Wednesday you have the same cold, you can joke with him and say: “I have caught