大学英语课后习题.doc

Unit1 audio 　boundary 　cup (v.) 　decade 　directly 　focus 　overtake 　species 　subtle 　tone 1. The essayist’s language expresses rich and subtle?meanings.?2. The stockbrokers were overtaken?by the sharp drop in the stock market last Tuesday.?3. Biologists have estimated that there are around one million animal and plant species?living and growing in the rainforests.4. In the United States the cost of living has been steadily rising in the past few decades5. The quickly growing company has ambitious plans to expand beyond nation boundarie 6. That computer store is having a sale of audio?software; let’s go and have a look.7. To be safe, you may put on your dark glasses to avoid the sun shining into directly your eyes.8. When the kitchen is finished, I’m going to focus?my attention on the garden shed. 9. In a serious tone?of voice, the doctor warned him to keep off sugar.10. She Cupped her hands around the mug of hot coffee to warm them. 1. I didn’t expect you to be so efficient at that rate;? the task will be finished ahead of schedule.?2. For the sake of safety, you must keep all medicines away from children.3. When we come to?know these new employees better, we will assign more suitable tasks to each of them.4. This evening dress is rather expensive since it is made by hand5. In the World Cup, England tried to beat its long-term rival Argentina and qualify from the “Group of Death” and vice versa ? Unit2 　Model: Einstein’s theories of relatively contributed much to the development of science. (relativity) The spokesman was merely given a?condense?version of the document, so he didn’t know much about the details. (condensed)　2. Stout’s?curious?in science was sparked by the fascinating stories about Nobel Prize winners. (curiosity)　3. When there is too much smoke in the room, the?devise?would automatically turn on the alarming system. (device)　4. Anyone without patience and?persistent?is unlikely to make a good researcher. (persistence)　5. There is?co