Look closely at your hands. Are they clean? It doesn"t matter how many times you
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Look closely at your hands. Are they clean? It doesn"t matter how many times you wash your hands, tiny microbes (微生物) still stay on them. But don"t worry. Most microbes don"t harm you. Now scientists say the microbes on our hands could be used in a surprising way; fighting crime, According to a recent survey microbes as well as fingerprints(指纹) could be used to indentify the criminal. Everyone has his own set of microbes on the hands. That is to say, if you and your best friend were able to see and compare all the microbes on your hands, your hands probably would look different. Some microbes only show up on your hands while others live only on your friend"s hands. When you work on a computer you leave the microbes from your hands on the keyboard. The scientists can easily tell the owner of the keyboard by looking at the microbes on it. Even if you don"t leave your fingerprints behind, your microbes may give you away. Noah Fierer, a scientist, says. "You can only clean a fingerprint, but you can"t sterilize (使无菌) a surface just by wiping(擦) it off," He says that scientists have a lot more work to do before the microbe is used as a useful tool. 小题1:According to the passage,_______ could be used to identify the criminal.A.fingerprints | B.scientists" hands | C.microbes | D.fingerprints and microbes on people"s hands | 小题2:Paragraph 3 tells us that________.A.our hands look similar | B.the microbes will make the keyboard dirty. | C.we should compare hands often | D.we have our own sets of microbes. | 小题3:When you work on computer, the microbes________.A.just stay on our hands | B.also stay on the keyboard | C.will do harm to you | D.will disappear | 小题4:From Noah Fierer we know that________.A.fingerprints are no longer useful in fighting crime | B.microbes can be found on everyone"s hands. | C.unlike microbe fingerprints can be cleaned if people wipe them | D.the microbe is used as a useful tool | 小题5:What’s the best title of the passage? A.Microbes May Tell Who You Are | B.Scientists Say Everyone Has Microbes | C.Noah Fiercer Does Research Into Microbes | D.Fingerprints Help Catch Criminals |
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答案
小题1:D 小题1:D 小题1:B 小题1:C 小题1:C |
解析
主旨大意:文章介绍了手上的细菌也可以用来辨别人。 小题1:细节理解题。根据文章第一段的最后一句“According to a recent survey microbes as well as fingerprints(指纹) could be used to indentify the criminal.”可知正确答案是D。 小题1:细节理解题。根据第一段的第三句“This first came out of a restaurant in Singapore, but it is now very popular as the soup du jour in Chinese restaurants. ”可知正确答案是A。 小题1:推断理解题。根据第一段的第三句“Everyone has his own set of microbes on the hands.”正确答案是B。 小题1:细节理解题。根据“You can only clean a fingerprint, but you can"t sterilize (使无菌) a surface just by wiping(擦) it off,”。正确答案是C。 小题1:主旨理解题。通读全文可知Noah Fiercer在研究细菌。正确答案是C。 |
举一反三
Many of us don’t pay much attention to the importance of eye care. It is said that if you take care of your body, then you can surely be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place. There are several causes leading to poor eyesight like not enough food, genes (基因) and aging (老化). Televisions, computers and reading are also the causes of having poor eyesight. If you happen to work in front of the computer, it is best to take a break every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful things. For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eyesight form UV rays. Eating healthy foods will do good to your eyesight. Remember that vitamins A, C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight, too. If a person exercises regularly (定期地) and eats the right kind of food, his eyes will stay in good condition for a long time. All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person’s eyesight, too. In a world, eye care is very important, no matter how old a person is. 小题1:_____ is the most important way to protect our eyes.A.Natural eye care | B.Taking medicine | C.Seeing the doctor | D.Being happy all the time | 小题2:All the following causes can lead to bad eyesight except _______. A.age | B.height | C.reading | D.computers | 小题3: What should you do if you have to work in front of the computer?A.Eat healthy foods. | B.Clean the eye by using cold water. | C.Wear a pair of sunglasses. | D.Have a rest after working for a while. | 小题4:What do the underlined words “UV rays”mean?小题5: Which is the best title of the passage?A.Ways of Eye Care | B.Ways of Eye Exercises | C.Ways of Being Happy | D.Ways of Being Healthy |
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Dear Mrs. Web Dear Mrs. Web provides free personal advice and opinions for you. She receives and answers worldwide email questions. She will offer you some new suggestions on your problems, like study stress, disinterested friend … Dear Mrs. Web welcomes all questions and comments. You can receive the reply usually in 48 hours. Her email address is mrsweb@advice.com. Help Line Volunteers Every year thousands of old people are in need of our help. The Help line provides a heartwarming, helpful, kind support and information service for the English-speaking aged people. We are in need of volunteers who are: ● good listeners, warm-hearted and patient ● excellent English speaker ● can work 10 hours every day Please call us at 0241-85902 or email us, helper@lineservice.com Save the Earth Club Earth club is for any student in Green School. Earth Club’s goal is to help keep the school, neighborhood, and city cleaner by encouraging recycling, highway clean up, and river, lake and school campus clean up. We hope to improve the environment and encourage others to do the same. We also meet to discuss some real solutions to saving the earth. Earth Club meets 2-4 times a month. Come and Join us! The King Sweeper My great, great grandfather invented the carpet sweeper 125 years ago. This King Sweeper is by far the best. I invite you to try it in your home. You’ll find it used daily in hospital, restaurants, offices and homes throughout the world. This is just the thing to keep your carpet soft, clean and fresh. Only for$29.99! We’re so sure that you’ll be delighted with the result of using our product. Trendy Sunglasses They can protect your eyes when driving, gardening or reading in the sun. it can make your life easier and happier, and make you look smarter!$ 10.99 each or 2 for $19.99! 小题1:If you are not getting on well with a friend of yours, you can email for help.A.Save the Earth Club | B.Dear Mrs. Web | C.Help Line Volunteers | D.The King Sweeper | 小题2: Which of the following has the least chance to get help from Help Line Volunteers?A.An old American farmer. | B.An old Chinese farmer. | C.An old English farmer. | D.An old Canadian farmer. | 小题3:Save the Earth Club is _____ to help improve the environment.A.a world club | B.a city club | C.a school club | D.a neighborhood club | 小题4: If you buy a King Sweeper and two pairs of Trendy Sunglasses, you will save _______. A.$10.99 | B.$1.99 | C.$19.99 | D.$2.99 | 小题5:Peopel who get help from Dear Mrs. Web or Help Line Volunteers______.A.have to pay for it | B.have to help others | C.must be quite poor | D.needn’t pay for it |
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MSG(monosodium glutamate) is a food additive(食品添加剂),which has been widely used by many food factories all over the world since it appeared first in Japan in 1909. MSG is a substance that is added to some food to improve its original(原先的) taste and colour. It is used in foods around the world such as cakes, bread, frozen meats, fish and vegetables. In the beginning, people thought MSG was safe just like salt and sugar. However, in 1968 some people reported they seemed to have bad reactions(反应) to MSG after having had a meal at a restaurant. They included headaches and quick heartbeat(心跳).It was also reported that MSG excited a person’s brain and caused his death in Japan. Scientists think that MSG may lead to many neurological disorders(神经紊乱).In mice studies done by a university, the evidence showed the mice didn’t want to eat the food including MSG. Today many food companies “hide” MSG on food labels(标签) by using different names. If you see “natural flavorings”,“hydrolyzed protein”and “spices” in a food label, you are probably seeing a hidden way to “report” MSG in a food label. Every time we have a meal in a restaurant, we always feel the food very delicious to taste, but sometimes it is dangerous for our health because some poisonous food additives have been added to the food. To protect people’s health, our governments, from central to local, are taking actions to stop factories producing poisonous food additives. 小题1: Monosodium Glutamate is _______A.a food | B.an additive | C.a factory | D.a country | 小题2:MSG is often used in ______.A.frozen meats | B.cups | C.clothes | D.book covers | 小题3:The examples in the second paragraph tell us ________.
A.the food including MSG is delicious | B.people like to eat in a restaurant | C.mice like eating the food including MSG | D.MSG is not safe sometimes | 小题4:If you see “natural flavorings”,“hydrolyzed protein” and “spices” in a food label, you will know _____________.A.you must eat the food in a hidden way | B.the food label must be hidden | C.MSG is probably added to the food | D.you must report the food to your parents | 小题5:The underlined word “substance” in the article means __________.A.colour | B.material | C.taste | D.food |
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In Chicago, a computerized system has been developed that controls(管理)traffic on the city’s 235 miles of seven expressways. Now one—a controller—can follow the movement of Chicago’s traffic by looking at a set of lights. The system uses electric sensors(感应器) that are built into each expressway, every half a mile. Several times a second, the computer receives information from each sensor and translates it into green, yellow or red lights on a map in the control room. A green light means traffic is moving forty-five miles an hour, yellow means thirty to forty-five miles an hour, and red means heavy traffic—cars standing still or moving less than thirty miles an hour. “See that red light near Austin Avenue?”the controller asked a visitor.“That’s a repair truck fixing the road, and the traffic has to go around it.”At the Roosevelt Road entrance to the expressway, the light kept changing from green to red and back to green again.“A lot of trucks get on the expressway there,”the controller explained.“They can’t speed up as fast as cars.”The sensors show immediately where an accident or a stopped car is blocking the traffic, and a truck is sent by radio to clear the road. The system has lowered the number of accidents by 18 percent. There are now 1.4 deaths on Chicago’s expressway for each one hundred million miles traveled, while in other parts of the county there are 2.6. Traffic experts say that the Chicago system is the “coming thing”.Systems like Chicago’s are already in use on some expressways in Los Angeles and Houston.“Chicago has taken the lead,”said New York City’s traffic director and he added,“Chicago’s a good example.” 根据短文内容,选择最佳答案,并在答题卡上按要求作答。 小题1:The passage is mainly about ________ on expressways in Chicago.A.the traffic control system | B.the movement of the traffic | C.the electric sensors | D.the traffic lights | 小题2:When the cars move under 30 miles an hour, ________ on the map in the control room.A.the red light appears | B.the red light turns yellow | C.the yellow light appears | D.the green light turns red | 小题3: According to the passage, we may learn __________.A.some visitors are traveling on the expressway | B.there is no heavy traffic on Chicago’s expressways | C.the traffic on Chicago’s expressways is well managed | D.the number of accidents in the US has dropped by 18% | 小题4:In Paragraph 2 the underlined word “it” refers to ___________.A.the red light | B.the truck that needs repairing | C.the traffic | D.the truck that is fixing the road | 小题5:The writer writes the article mainly by _________.A.giving reasons and results | B.giving examples and explaining them | C.describing what he thinks | D.asking and answering questions |
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Who taught you to walk when you were little? Who worries the most when you are 56 ? Who makes you dinner? It’s your 57 . No matter what happens, she’ll 58 the love for you. Do you know how did 59 Day come into being(产生) ? It began in the US in 1907 whenan 60 girl named Anna Jarvis started a campaign to honor(给......以荣誉) mothers. Shebelieved that mothers could 61 people to get over the 62 of the War and to strengthen (加长) the relationship inside families. On Mother’s day, children usually help their mothers do 63 . In western countries, bringing mothers 64 in bed is common. A mother will get up late while her children make her favorite breakfast. Children also make their own Mother’s Day card 65 a thank-you note. Or they buy gifts and flowers for their mothers. 小题1: A. lazy B. ill C. sleepy 小题2:A. father B. mother C. sister 小题3: A. continue B. stop C. start 小题4:A. Children’s B. Women’s C. Mother’s 小题5: A. Asian B. Australian C. American 小题6:A. help B. ask C. order 小题7:A. worry B. pain C. memory 小题8: A. homework B. housework C. hair 小题9: A. flowers B. clothes C. breakfast 小题10: A. with B. for C. from |
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