Unit 2 Fit for life Period 5 课件 2.ppt

1、Unit 2 Fit for life Period 5 课件 2,Unit 2,Section ,Step 1,Step 2,Step 3,Step 4,Step 5,1How come there has been debate about vaccines? 2What do you think Dr Gary Goldbaums opinion is?,Vaccines, once called the “savior of children”， now cause a fierce debate often found on political talk shows. Questio

2、ns over the safety of vaccines came into the mainstream in the late 1990s, caused by international debate over a claimed connection between a vaccine and autism (自闭性) Actress Jenny McCarthy became an advocate for the cause, blaming her own sons autism on the vaccine. The movement quickly gained advo

3、cacy from parents who wanted to protect their children from a developmental disorder for which there is still no known cause.,Since 1997, theres been a worldwide decline in the number of school children from kindergarten through high school who are fully vaccinated. In Washington state, a lot of par

4、ents refused vaccinations for their kindergartenage children. This meant 6.2 percent of these children were missing one or more immunizations (免疫) in the 200910 school year, according to the Federal Centers for Disease Control and Prevention. No vaccine is 100 percent effective. But vaccinating crea

5、tes a firewall against the spread of contagious diseases.,“This isnt about protecting one child; its about protecting the entire community，” said Dr Gary Goldbaum, health officer for the Snohomish Health District. “Our point of view is that immunizations are one of the top medical achievements of al

6、l time，” he said. “They work really well at preventing illness and diseases.”,“Nationally, more than 10 million vaccines are given each year to children less than one year old. The number of vaccinations for children now at 16 is the largest its ever been，” he said. At some hospital visits, children

7、 can get as many as five or six vaccines. Stephens said in his 26 years as a childrens doctor he has never seen a child has a reaction to an immunization more serious than sore arms and shortterm fever. “I think parents underestimate (低估) the severity of the disease and overestimate the severity of

8、the vaccination，” he said.,.Fill in the blanks according to the following pictures.,1.A is a person who prepares and sells medicine.,chemist,2.A is a person who takes care of peoples teeth.,dentist,.Answer the following questions. 1What do people do when they feel ill? 2. What will happen if they ta

9、ke the wrong medicine? 3Do you know their English names?,They may take medicine.,They may not get better or even get worse.,(1),aspirin,(2),penicillin,Scan the text and choose the best answers. 1Whats mainly discussed in this passage? AFamous doctors. BHow penicillin and aspirin were invented. CTwo

10、important medicines Aspirin and Penicillin. DHow to keep healthy. 答案：C,2Which of the following is considered to be the time when aspirin was invented? A3,500 years ago.B2,500 years ago. C1897. D1899. 答案：C 3Which of the following cant aspirin be used for? AKeeping quiet. BPainkilling. CCuring diabete

11、s. DReducing heart attacks. 答案：A,4Which of the following is TRUE? APenicillin can keep people healthy by thinning their blood. BAspirin can save lives by killing bacteria. CAspirin was discovered by accident. DPenicillin was discovered by chance. 答案：D,.Read the text carefully and decide whether the

12、following statements are true (T) or false (F) 1Aspirin was invented by the Greek physician Hippocrates in 1897. ( ) 2Aspirin has proved vital for reducing fever and helping stop pain. ( ),F,T,3Penicillin can reduce blood sugar levels and, therefore, help people with diabetes. ( ) 4Fleming thought t

13、he mould might be used to treat illnesses caused by bacteria. ( ) 5Due to the widespread use of penicillin, many lives were saved during World War . ( ),F,T,F,.Read the text again and fill in the form. Two lifesaving medicines,effects,chewed,juice,powder,heart,tablets,blood,1928,killed,quantities,open up,that,trials,tablets,vital,but,out,standard,in large quantities,widespread,Do you think new medicines will be invented to cure dise