八年级(下)Units 1-2 word版习题及答案【人教版】(11页).doc
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1、-八年级(下)Units 1-2 word版习题及答案【人教版】-第 11 页第一部分 教材知识研究八年级(下)Units 1-2(限时:60分钟满分:74分)一、完形填空 (15分)(2016舟山) Brittany Amano wants to make sure every child in the US has enough to eat.Brittany Amano, now 18, knew how it felt to go hungry. Her mother tried to find a _1_ in Honolulu, Hawaii to support the fami
2、ly. Her grandmother helped out as much as she could. But the family _2_ had to depend on a local food bank to live on, and for that she was _3_. When they lost their home, Amanos family had to live in a friends basement(地下室). “I could feel _4_ hunger and homelessness influenced my family.” Amano tol
3、d a reporter from TFK. “The experience made me want to give _5_ to others in the same situation.”In fourth grade, she and some of her friends started a food project. They _6_ $700 and collected 800 pounds of food. _7_ twelve, Amano set up the nonprofit(非盈利的)group Hawaiis Future Isnt Hungry. She hope
4、d to raise $10,000 _8_ she finished high school. She ended up raising more than $500,000 in four years.With the _9_ collected, the nonprofit group, now called The Future Isnt Hungry, can offer fresh fruits, vegetables, and other _10_ foods to school kids on Fridays. This is to make sure that the kid
5、s and _11_ families have enough food to get them _12_ the weekend. So far, the effort has helped more than 75,000 people.In the fall of this year, Amano will _13_ Duke University, in North Carolina on a full scholarship. After graduation, she plans to return to Honolulu to _14_ to the city that gave
6、 her so much.“It doesnt matter if you help one million people _15_ just one person.” she says. “The smallest action can make a huge difference.”1. A. job B. club C. house D. school2. A. yet B. still C. just D. never3. A. careful B. helpful C. hopeful D. thankful4. A. why B. how C. what D. while5. A.
7、 hope B. choice C. surprise D. pleasure6. A. paid B. saved C. raised D. borrowed7. A. By B. At C. Until D. Below8. A. so B. since C. when D. if9. A. food B. clothes C. books D. money10. A. sweet B. healthy C. cheap D. delicious11. A. his B. her C. their D. our12. A. into B. across C. along D. throug
8、h13. A. enter B. visit C. drop D. leave14. A. set off B. get down C. give back D. come up15. A. or B. as C. but D. and二、阅读理解 (14分)A(2016温州)Harmful microbes like bacteria, viruses and other germs are pathogens. They may enter your bodies and make you ill. The immune system is the bodys defence system
9、 that protects you from illness and disease caused by the pathogens.The immune system is made up of nonspecialized defences such as skin, tears and the acidic juice produced by the stomach, keeping you from the pathogens. It also has some highly specialized defences, which are different kinds of imm
10、une cells, grouped into phagocytes and lymphocytes. Phagocytes are a type of white blood cell. They are swimming around in your blood stream, always on the lookout for antigensthe pathogens that have entered your bodies. Whenever they see one, they will eat it. However, some antigens are hard to fin
11、d and kill. Then lymphocytes, which are also white blood cells and the main types are B cells, T helper cells and T killer cells, will be the killers of the sneaky antigens.B cells, T helper and T killer cells work together to find and kill these antigens. B cells produce substances, called antibodi
12、es, which stick to the antigen. When that happens, it will tell the T helper cells to come over and either:1. help the B cells kill the antigen, or 2. call the phagocytes or T killer cells to move in for the kill. Once a B cell or a T cell attacks an antigen, they create cells to “remember” it. Thos
13、e “memory cells” hang out in your blood and if they see the same antigen again, they quickly recognize it so your immune system can act faster at killing it.The immune system is more powerful than you probably imagine. Scientists from the University of Pennsylvania recently took immune cells from th
14、ree patients with leukemia, then genetically changed them into “serial killer”cells to attack cancer cells. The study was small but the results were groundbreaking. The modified immune cells increased at least 1,000 times in the body and killed all the cancer cells. Therefore, more“memory cells”were
15、 created.The immune system can be developed. Eating lean protein food(beef, beans) and food rich in vitamins A, C, and E(sweet potatoes, carrots), taking a 30minute walk every day and reducing your stress levels, etc. will help you achieve it. 1. What can the immune system do?A. Keep you from antibo
16、dies. B. Protect you against antigens.C. Make your bodies weak and sick. D. Help microbes enter your bodies.2. How are the sneaky antigens found and killed?A. Phagocytes, B, T helper and T killer cells work together.B. Skin, tears, acidic juice and immune cells work together.C. B cells create “memor
17、y cells” to swim around in the blood.D. B cells produce antibodies to tell T helper and T killer cells.3. What does the underlined word “it” in the last paragraph refer to?A. The immune system can be made more powerful.B. Less antigens can be killed by the immune system.C. White blood cells act less
18、 quickly in the immune system.D. The immune system can be changed into the“serial killer”. 4. This article is mainly about_. A. the types of white blood cells B. a research report about human healthC. the cause of illness and disease D. an introduction to the immune systemB(2017原创)消防战士黄一飞A heavy rai
19、n hit Jingmen city from June 30th to July 1st and caused flood. Some living buildings were in water. People had to move to another safe place. 9yearold Jiajuns house was in water, too. The family were in danger. They had to move away. On July 1st, they found a raft(小筏子)and wanted to take it to a saf
20、e place. Unluckily, the raft sank on half way. Jiajun, Jiajuns grandmother and other two people fell into water. Five firefighters(消防员)saw the accident and they jumped into water quickly to rescue them. Nineteenyearold Huang Yifei, who has been a firefighter for about two years, grabbed(抓住)little Ji
21、ajun. But the water rushed quickly and Huang couldnt find a place to hold on. They floated on fast water about 500 meters away then they passed through a bridge. After that Huang saw a small tree that they could go close to. Huang told Jiajun to grab the tree tightly, but he himself only swam in wat
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