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1、1 课时作业 17 . 单句改错 1. People often talk about Hangzhou, that is famous for the West Lake. _ 2. He reached London in 1996, when, some time later, he became a famous actor. _ 3. I have never been to Dalian, where is said to be an attractive city. _ 4. The sun gives off light and warmth, who makes it pos
2、sible for plants to grow. _ 5. In an open boat, there were four men, one of who was a doctor. _ 6. Which his parents expect, Tom studies hard and is ready to help others. _ 7. They will fly to Kunming, which they will stay for two or three days. _ 答案 1. that which2. whenwhere 3. where which 4. who w
3、hich5. who whom6. Which As 7. whichwhere 或在 which 前面加 in . 用非限制性定语从句完成句子 8The teacher， _， is coming. 你正在等候的那位老师快来了。 9His father，_，was praised by the government. 他的父亲在河中救了两个孩子，受到了政府的表扬。 10 The weather turned out to be very good， _ 天气变好了，这我们都没想到。 11 I will visit Beijing，_ 2 我将要去北京，在那儿住着我的父母。 12 The gi
4、rl，_，was admitted to Beijing University. 父亲是老师的那个女孩被北京大学录取了。 13 _，Mo Yan is a famous writer. 正如我们所知，莫言是一位著名的作家。 14 My house，_，has got a lovely garden. 我去年买的那幢房子有漂亮的花园。 答案 8. for whom you are waiting 9. who saved two children in the river 10. which was more than we could expect 11. where live my pare
5、nts 12. whose father was a teacher 13. As we all know 14. which I bought last year . 阅读理解 A New research has found that even if you give up smoking, the damage it has done to your genes (基因 ) will stay there for a much longer time. In the research, a team of US scientists studied the blood of 16, 00
6、0 people.Among them, some were smokers, some used to smoke, and the rest were non- smokers.Scientists compared their genes and found that more than 7, 000 genes of smokers had changed a number that is one- third of known human genes. According to NBC News, both heart disease and cancer are caused by
7、 genetic changes.Some people may have had the changes when they were born, but most people get them in their day- to - day lives while doing things like smoking. When you stop smoking, a lot of these genes will return to normal within five years.This means your body is trying to heal (治愈 ) itself of
8、 the harmful effects of smoking.But the changes in some of the genes stay for longer.They can stay for 3 as long as 30 years.Its almost like leaving a footprint on wet cement (水泥 ) it will always be there, even when youve walked away and when the cement becomes dry. Although the study results may ma
9、ke people unhappy, there is a bright side： the findings could help scientists invent medicine to treat genetic damage caused by smoking or find ways to tell which people have heart disease or cancer risks. 15 The function of Paragraph 1 is to_ Agive an example Barouse readers interest Cmake an argum
10、ent Dgive the main idea of the passage 16 Most genetic changes happen because of_ Apeoples condition at birth Benvironmental pollution Cpeoples bad living habits Dheart disease and cancer 17 The underlined word “it ” in Paragraph 4 refers to_ Athe cement Bthe footprint Cthe harmful effects Dthe gene
11、tic change 18 Which of the following statements is true? AThe findings are the fruit of more than three years research. BThe findings have prevented more people from starting smoking. CThe findings offer evidence that a damaged gene can heal itself. DThe findings help to find cures for genetic damag
12、e caused by smoking. 答案与解析 这是一篇说明文。研究发现即使已经戒烟，它对基因造成的伤害还会保留很长的时间， 基因变化会使人患心脏病和癌症。 15 B 推理判断题。由第一段“New research has found that even if you give up smoking, the damage it has done to your genes ( 基因 ) will stay there for a much longer time. ”可知， 新的研究发现， 即使你戒烟， 它对你的基因造成的损害也会在身体里停留更长 的时间。以及下文通过实验说明这一问题的
13、和具体的影响，所以第一段点明了短文的主题， 4 同时第 1 段的作用也是引起读者的兴趣。故B选项正确。 16 C 细节理解题。由第三段“Some people may have had the changes when they were born, but most people get them in their day-to-day lives while doing things like smoking. ”可知，有些人可能在出生时基因就已经发生了变化，但大多数人的基因变化是日 常生活中如吸烟所导致的。所以大多数人的基因变化是日常生活中不良的生活习惯导致的。 故 C选项正确。 17
14、B 词义猜测题。由第四段“Its almost like leaving a footprint on wet cement ( 水泥 ) it will always be there, even when youve walked away and when the cement becomes dry. ”可知，这几乎就像在湿水泥上留下一个脚印，即使当你走了，当水泥变 干的时候，它会一直在那里。所以第4 段中带下划线的“ it ”一词是指“足迹”。故B选项 正确。 18 D 细节理解题。由最后段“the findings could help scientists invent medi
15、cine to treat genetic damage caused by smoking or find ways to tell which people have heart disease or cancer risks.”可知，这项发现可以帮助科学家发明药物来治疗吸烟造成的基 因损伤，或者找到方法来判断哪些人患有心脏病或癌症。所以D选项“这些发现有助于找到 治疗吸烟引起的基因损伤的方法”是正确的。故D选项正确。 B July 20, 1969 is a day that will forever go down in the history books as a day that changed the world forever. That was the day when American astronaut and explorer Neil Armstrong was the first person to set foot on the moon. The moon is located almost 240， 000 miles from the Earth. Arms
