Unit 10 B.ppt

Text B Antarctic Ice Gets thicker Pre-reading Tasks 1. Have you ever heard of the term “greenhouse effect”? 2. As our world is getting warmer, what do you think is happening to the ice in Antarctica? In Antarctica,The landscape is reduced to its barest elements: ice, rock, water and sky. But within those elements are surprising variations, both subtle and dramatic. Ice appears in endless shapes, forms, colors----from floes and bergs to sheets and shelves. Ice, volcanoes, snow, birds (including albatross), mountains, penguins (seven species), elephant seals, glaciers, whales and fascinating barren scenery are Antarctica’s main attractions. New Words and Expressions concern n. 1.a feeling of worry, especially about something such as a social problem, or somebody’s health:关心 [近] worry, anxiety e.g.The recent rise in crime is a matter of great public concern. 2. a matter that relates to or affects one：关系; 关联 v. 1.to be about:涉及：与…有关 [近] relate to e.g. This decision concerns all of us. 2. to be of interest or importance to:关心, 担心 e.g. We are all concerned for (about) her safety. be concerned about 关心, 担心 global a. 1. having the shape of a globe; spherical: 球形(体,状)的 2. of, relating to, or involving the entire earth; worldwide: 全球的;关涉全球的；全世界的： [近] worldwide global war; global financial crisis 3. comprehensive; total: 综合的；完全的 the global sum (=total sum) [扩展] globally ad. globality n. 全球性 sheet n. 1. a broad, flat, continuous surface or expanse: (一)片, (一)张 a sheet of ice 一大片冰域 2. piece of material, such as paper, metal, glass, or plywood: 薄片 a pay sheet ([美]payroll) 3. 被单, 被褥 Put clean sheets on the bed. 4. a newspaper, especially a tabloid: 报纸 v. to cover with, wrap in, or provide with a sheet:铺盖 [习语]a blank sheet 一张白纸；纯洁的心灵 come down in sheets （大雨）倾盆而下 sea level n. 海平面 theory n. 1. such knowledge or such a system；A be