B9M2DNAtheSecretofLife教学设计

1. You must write home _____ even when you don’t have much to say.

A. more or less B. now and then C. sooner or later D. little by little 2.The employment rate has continued to rise in big cities thanks to the efforts of the local government to increase ______. (2010 北京)

A. then B. those C. it D. that 3. We feel ______ our duty to make our country a better place. (2011 天津) A. it B. this C. that D. one 4. Why don’t you bring _____ to his attention that you’re too ill to work on? A. that B. it C. his D. him (2011 江西) 5. — I’ve read another book this week.

— Well, maybe ______ is not how much you read but what you read that counts. A. this B. that C. there D. it (2009 浙江) 6. I like a house with a beautiful garden in front, but I don’t have enough money to buy ______. （2009 江西） A. one B. it C. this D. that

7. It’s high time you had your hair cut; it’s getting _______. (2009 全国) A. too much long B. much too long C. long too much D. too long much 8. Usually John would be late for meetings. But this time, _____ to my surprise, he arrived on time. (2009 北京) A. little B. much C. ever D. even

9. He doesn’t have ______ furniture in his room — just an old desk. (2008 陕西) A. any B. many C. some D. much 10. The two girls are getting on very well and share _____ with each other. A. little B. much C. some D. none (2008 安徽) 11. The more I think about him, the more reasons I find for loving him ______ I did. A. as much as B. as long as C. as soon as D. as far as (2005 湖南) 12. As is known to all, ______ People’s Republic of China is ______ biggest developing country in the world. (2011 陕西) A．the; 不填 B.不填; the C. the; the D. 不填; 不填

13. If we sit near _____ front of the bus, we’ll have _____ better view. (2010 山东) A. 不填; the B. 不填; a C. the; a D. the; the 14.Some people fear that _____ air pollution may bring about changes in _____ weather around the world. (2009 江西) A. 不填; the B. the; 不填 C. an; the D. the; a 15. You ‘d better remember _______: Smile to everyone. A. it

B. that

C. what

D. this

三、完成句子

1.John,__________________(像他父亲)， is taking over the business of his family. 2.What parents say and do ____________________________________(的确对孩子有极大的影响)

3. The doctor ordered the injured soldiers ________________________(马上做手术) 4. He was too careless ,and ___________________________(结果)，he failed the test.

5. His success depended_____________________________________________(在很大程度上得益于家人的支持)

6. We can ______________________________(相信) that scientists will find alternative resources for us in the future.

7. I ______________________________________(赞成你设法赚钱),but please don’t neglect your studies.

8. All the members present _____________________________(坚决反对这个计划). 四、阅读理解

Scientists continue to search for genetic answers to why some people live a long time.

One study has now examined more than four hundred and fifty people between the ages of ninety-five and one hundred and ten. Researchers at the Albert Einstein College of Medicine of Yeshiva University in New York recently reported the latest findings. The study looked at changes in genes that govern an important cell-signaling pathway. These genes are involved in the action of a hormone that affects almost

every kind of cell in the body. The hormone is called insulin(胰岛素)-like growth factor, or IGF-one.

Other researchers have found that mutations (变异)to the genes cause two effects in animals. The animals do not grow as big as others of their kind but they live longer. The Einstein team wondered if these changes might also influence how long humans live. So they looked for the mutations in their study group of Ashkenazi, or Eastern European, Jews. Ashkenazi Jews are more genetically similar than most other groups, so any differences are easier to find.

The researchers compared the findings to other Ashkenazi Jews whose family members did not live as long. In the control group, they say, no one had the mutations. Yet even in the study group, where the average age was one hundred, only two percent of the people had them. In other words, there are more answers waiting to be found. In recent years, the scientists have even identified so-called longevity genes. The latest findings were published in the Proceedings of the National Academy of Sciences. The mutations were found mostly in women. Daughters of those who lived to be one hundred had higher levels of the hormone than people in the control group. And they were an average of two and a half centimeters shorter.

A drug that decreases the action of the IGF-one hormone is currently being tested as a cancer treatment. Nir Barzilai, leader of the Einstein study, says the drug could be useful in delaying the effects of aging. But he noted that the subjects in the study were born with their mutations. So it is not clear whether the drug would help people who receive it later.

Doctor Barzilai also points out that many people are receiving treatments with human growth hormone to try to delay the effects of aging. Yet he says if low growth-hormone action extends life, as the new findings suggest, then he wonders if getting more of it could shorten life.

1. According to the passage, the longevity of a person is decided by ___________ A. longevity genes B. taking drugs C. hormone D. living habits 2. Which of the following statements is not TRUE? A. All big animals don’t live longer than small animals

B. Scientists have found the secret why some people live a long time. C. Only two percent of the people over one hundred had the mutations. D. A drug that decreases the action of the IGF-one hormone is currently being tested as a cancer treatment

3. What’s the attitude of the author towards growth-hormone action? A. approval B. doubtful C. optimistic D. indifferent 4. In which column can you find the article? A. health 试题答案： 一、单词拼写

1.identical 2. consequences 3. fortune 4. ambitious 5.research 6.violence 7.detail 8.discoveries 9.extent 10.decades 二、单项选择

1-5 BCABD 6-10 ABBDB 11-15 ACCAD 三、完成句子

1.who takes after his father

2. does have a great influence on the children 3.be operated on at once/ to be operated on at once 4. as a consequence

5.to a great extent on the support of his family 6.rely on it

7.approve of your trying to make some money 8.oppose the plan bitterly 四、阅读理解 ABBB

B. science

C. film

D. sports

Book IX Module 2

DNA — the Secret of Life 拓展资源