二英语unit7words.ppt

Have you ever dreamed of your future hometown?Is it much better or much worse than today?Here is what I expect my hometown to be In the near future. It’s a green garden with lots of trees,flowers and grasses all round as well as new houses and tall buildings.Born and brought up here,you can always hear birds singing, watch birds flying without going out of your doorstep.Sometimes,it’s hard for you to tell the old trees from the building-some of my neighbours say, there are houses where are trees and flowers. This is just my hometown, my paradise. Maybe it’s just a dream, but I’m sure it will come true sooner and later. 1 _______cause illnesses such as the common cold,flu and measles.麻疹 2 After a year,she was________of cancer,and she still works happily now. 3 One of the boys in the class had a fever and he soon________other children. 4 The virus is ________via physical contact. 5 Simon is not________at the moment.Should I ask him to call you back? 6 We have been asked to________our presentation to 5 minutes maximum. 7 He doesn’t often get flu,but when he does he really_______. 8 Normally,people and animals that are________are weak and unable to protect themselves from attack. AIDS is a disease that breaks down the body’s immune system and leaves a person defenceless against infections and illnesses. People get AIDS after having been infected with HIV, the virus that causes the disease.There are millions of people who die of AIDS every year. So far, there is no treatment available for the disease and AIDS patients have to deal with the fact that they might die young. Unfortunately, a deadly disease such as AIDS also frightens others. Because of a lack of knowledge about how it gets transmitted, people often treat AIDS patients as if they were bad or dangerous. Xiaohua is a 12-year-old girl. Though she has been living with AIDS for 12 years, she is not discouraged by the disease. On the contrary, it makes her realize how