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Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,11/7/2009,#,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,中考模拟演练,阅读理解B篇,中考模拟演练阅读理解B篇,练习(1),Researchers have studied left-handedness for at least 150 years.However, what makes a person become left-handed remains unknown, although there are many theories about it.,A recent UK study of unborn babies found that handedness might develop before their births.,练习(1) Researchers have st,About nine out of ten unborn babies preferred to put their right hand into their mouths.Another finding is that mothers who are over 40 at the time of a childs birth are 128% more likely to have a left-handed baby than a woman in her twenties.,Since about 90% people are right-handed, left-handed people do go through some difficulties.,About nine out of ten unborn b,As our writing runs from left to right, it is hard for a left-handed person to write without smudging (,模糊,) the ink.Whats more, most tools such as scissors and kitchen knives are designed for use with the right hand.It can be dangerous if they are operated with the left hand.,In the past, left-handed children were forced to use their right hand.,As our writing runs from left,Luckily, now fewer people have a,bias,against left-handers.Left-handed children are no longer looked down upon in school.Some shops sell products for left-handers, such as left-handed guitars and even a left-handed computer mouse.Since 1976, there has been an unusual day for left-handers.International Left-Handers Day is celebrated on August 13th every year.,Luckily, now fewer people have,It draws peoples attention to the challenges left-handers face in a world full of right-handers.More and more people have realized left-handedness is nothing strange.Some of the most famous left handed people include Mark Twain, Winston Churchill, Barack Obama and Bill Gates.,It draws peoples attention to,( )1. A baby may develop left-handedness when _.,A.nine out of ten babies do so,B.his mum is in her twenties at his birth,C.his mum gives birth to him at an older age,D.he puts his right hand into his mouth often,C,( )1. A baby may develop,( )2. One problem for left-handed people is that _.,A.their handwriting is awful,B.people think they are dangerous,C.kitchen knives are too big for their left hands,D.many things are made only for right-handers,D,( )2. One problem for le,( )3. The underlined word “,bias,” means _ in Chinese in this passage.,A.态度 B.偏见 C.恐惧 D.偏好,B,( )3. The underlined wor,( )4. From the passage, we know that left-handed children _ in the past.,A.lived a comfortable life,B.were not considered normal,C.were very popular at school,D.could use products for left-handers,B,( )4. From the passage,( )5. The best title of this passage is _.,A.International Left-Handers Day,B.Challenges for Left-handers,C.Left-handedness, Nothing Strange,D.Reasons for Left-handedness,C,( )5. The best title of,练习(,2,),Your house may have an effect on the shape of your body.Experts say the way you design (,设计,) your home could play a role in whether you put on the pounds or keep them off.You can make your environment work for you instead of against you.Here are some ways to change your home into part of your diet plan.,练习(2) Your house may have a,Open the curtains (,窗帘,) and turn up the lights.Dark environments are more likely to encourage overeating, for people are often less awkward (,尴尬的,) when theyre in poorly lit places,and so more likely to eat lots of food.If your home doesnt have enough window light, get more lights and flood the place with brightness.,Open the curtains (窗帘) and,Mind the colors.Research suggests warm colors make us eat more.In one study, people who ate meals in a blue room consumed (,消化,) 33 percent less than those in a yellow or red room.Warm colors like yellow make food appear more,appetizing, while cold colors make us feel less hungry.So when its time to repaint, go blue.,Mind the colors.Research,Dont forget the clock,or the radio.People who eat slowly seem to consume about 70 fewer calories (,卡路里,) per meal than those who rush through their meals.Begin paying attention to the time, and try to make dinner last at least 30 minutes.And while youre at it, actually sit down to eat.If you need some help slowing down, turn on relaxing music.It makes you less likely to rush through a meal.,Dont forget the clockor,Downsize the dishes.Big serving bowls and plates can easily make us fat.We eat about 22 percent more when using a 12-inch plate instead of a 10-inch plate.When we choose a large spoon over a smaller one, total intake (,摄取量,) jumps by 14 percent.And well pour about 30 percent more liquid (,液体,) into a short, wide glass than a tall, skinny (,极瘦的,) glass.,Downsize the dishes.Big s,( )1. The passage is especially helpful for those who care about _.,A.house buying B.their body shape,C.healthy diets D.their home comforts,( )2. A home environment in blue can help people _.,A.take in food better B.burn more calories,C.reduce food intake D.feel less awkward,B,C,( )1. The passage is esp,( )3. The underlined word “,appetizing,” probably means _ in the passage.,A.精致的 B.恶心的,C.饱腹的 D.开胃的,( )4. People are advised to _ at mealtimes.,A.eat quickly B.play fast music,C.use smaller spoons D.turn down the lights,D,C,( )3. The underlined wor,( )5. The best title for the passage is _.,A.Ways of Serving Dinner,B.Is Your House Making You Fat?,C.Effects of Self-awareness,D.Is Your Home Environment Relaxing?,B,( )5. The best title for,练习(,3,),Animals can move from place to place,，,but plants cannot.When an animal is under attack,，,it can run away or fight back.Plants certainly cannot run away,，,and they have no teeth or claws (,爪子,).But plants can protect themselves in both physical and chemical ways.,Some plants have their own ways to keep animals away.,练习(3) Animals can move fr,For example,，,the leaves of the holly (,冬青,) have sharp prickles (,刺,) that discourage grass-eating animals.Holly leaves on lower places have more prickles than leaves on upper places.This is because the lower leaves are easier for most animals to reach.Some plants,，,such as the oak trees (,橡树,),，,have thick and hard leaves that are difficult for animals to eat.,For example， the leaves of the,Some grasses may contain a,sandy,material,，,and eating such grasses wears down the animals teeth.Many plants also have chemical defenses.Some plants produce chemicals that taste bitter (,苦,) or cause an unpleasant reaction.Some plants may fight against an attack by increasing the production of these chemicals.When a worm bites a tobacco leaf (,烟叶,),，,Some grasses may contain a sa,the leaf produces a chemical smell.Many plants depend on both physical and chemical defenses.A certain plant in China,，,for instance,，,has prickly leaves,，,and each prickle has poisonous water (,毒液,).Only one experience with this kind of plant will teach an animal to stay away from it in the future.,the leaf produces a chemical,( )1. A plant _ when it is under attack.,A.can protect itself B.can run away,C.can fight back D.must die,A,( )1. A plant _,( )2. According to the passage, the leaves of the holly have sharp prickles because _.,A.they are beautiful to watch,B.they stop people from picking,C.they stop grass-eating animals,D.they are lower,C,( )2. According to the p,( )3. An oak tree can protect itself because _.,A.it has leaves with sharp prickles,B.it has leaves with a sandy material,C.it has thick and hard leaves,D.its leaves taste bitter,C,( )3. An oak tree can pr,( )4. What does the underlined word “,sandy,” mean in Chinese?,A.含盐的 B.坏掉的,C.含沙的 D.腐烂的,C,( )4. What does the unde,( )5. The main idea of this passage is _.,A.holly has its own ways to keep animals away,B.some plants leaves can protect them,C.several ways to protect plants,D.plants can protect themselves in their own ways,D,( )5. The main idea of t,练习(,4,),A caterpillar (,毛毛虫,) that eats plastic bags could hold the key to solving plastic pollution,，,scientists say.Researchers at Cambridge University have discovered that the caterpillar which eats beeswax (,蜂蜡,),，,can also degrade (,降解,) plastic.,练习(4) A caterpillar (毛毛虫),Experiments show the insect can break down the chemical bonds (,键,) of plastic in a similar way to absorbing beeswax.Each year,，,about 80 million tons of the plastic are produced around the world.The plastic is used to make shopping bags,，,food packaging,，,one-off raincoat and other things,，,but it can take hundreds of years to degrade completely.,Experiments show the inse,However,，,caterpillars can make holes in a plastic bag in under an hour.“The caterpillar will be the starting point.We need to understand the details under which this process operates.We hope to provide the technical solution to cutting down the problem of plastic waste,” the scientist said.And the scientists who discovered it want to speed up the process of discovering the chemical,However， caterpillars can,secrets behind the natural degradation of plastic.They think something in the caterpillar,as well as the insect itself,might play a role in breaking down plastic.,If the chemical process can be found out,，,it could lead to a solution to managing plastic waste in the environment.“We are planning to use this finding in a practical way to get rid of plastic waste,，,secrets behind the natural deg,working towards a solution to saving our oceans and rivers,” said the scientist.“However,，,we should not feel good to,dump,plastic on purpose in our environment just because we now know how to degrade it.”,working towards a solution to,( )1. Scientists think the caterpillar hold the key to solving plastic pollution because _.,A.it is fed on beeswax B.it can be done experiments,C.it can degrade plastic D.it makes no waste,( )2. Plastic is used for _.,A.making shopping bags B.food packaging,C.one-off raincoats D.all of the above,C,D,( )1. Scientists think t,( )3. The key point of the solution is that _.,A.the caterpillar is a key point of the research,B.the chemical process which degrades the plastic,C.the caterpillar plays a key role in breaking down plastic,D.how to speed up the discovering of the chemical secrets,D,( )3. The key point of t,( )4. The underlined word “,dump,” means _ in Chinese.,A.购买 B.售卖,C.扔掉 D.降解,C,( )4. The underlined wor,( )5. What is the best title of this passage?,A.How caterpillars degrade plastic,B.Scientists are working towards plastic degradation,C.Scientists have found the chemical process,D.Caterpillars may help to solve plastic pollution,D,( )5. What is the best t,练习(,5,),What is the worst disease in the world? Many people might say it is cancer (,癌症,).Cancer will kill about 9.6 million people in the world this year, according to the World Health Organization.Scientists have been working to find ways to beat cancer.A lot of progress has been made in this field.,练习(5) What is the worst d,James P Allison from the US and Japanese researcher Tasuku Honjo discovered a new kind of cancer treatment that earned them the 2018 Nobel Prize in Physiology or Medicine in October.The new treatment can make our immune systems (,免疫系统,) strong enough to effectively fight cancer cells.It is hoped that this treatment can be used to treat most cancers in the future.,James P Allison from the,This is not the only recent improvement in cancer treatment.In November, the US Food and Drug Administration approved a new cancer drug called Vitrakvi.Instead of being effective only for treating specific types of cancer, this drug can be used to treat 17 different kinds of cancer, including lung cancer and breast (,乳腺,) cancer,USA Today,reported.,This is not the only recen,Finding cancer as early as possible is the best way to beat it.To check people for cancer, doctors must collect tissue (,组织,) from a patients tumor (,肿瘤,) and test it.This process can take a long time.But in December, scientists from the University of Queensland in Australia developed a simple cancer test that can detect (,检测,) cancer in a patients blood.The test takes less than 10 minutes.,Finding cancer as early,The test is about 90 percent,accurate, the Guardian reported.,With all of these treatments, cancer can be effectively controlled.Honjo believes most kinds of cancer will become treatable by 2050.“Even if we cannot completely eliminate (,消除,) the tumor, we can survive while still having part of a tumor,” Honjo said at a press conference in Stockholm, Sweden, in December.,The test is about 90 percent,( )1. _ won the 2018 Nobel Prize in Physiology or Medicine.,A.James P Allison,B.Tasuku Honjo,C.Vitrakvi,D.James P Allison and Tasuku Honjo,D,( )1. _ won t,( )2. Which of the following is TRUE about the new cancer treatment?,A.It was discovered in October, 2018.,B.It can be used to treat all the cancers in the future.,C.It is the only recent improvement in cancer treatment.,D.It can make our immune systems strong enough to effectively fight cancer cells.,D,( )2. Which of the follo,( )3. The underlined word “accurate” probably means _ in Chinese.,A.有风险的 B.准确的,C.错误的 D.有误差的,B,( )3. The underlined wor,( )4. According to the passage, the best way to beat cancer is to _.,A.find it as early as possible,B.eliminate the tumor completely,C.detect it in the patients blood,D.discover a new treatment,A,( )4. According to the p,( )5. The passage is mainly about _.,A.the great progress made to beat cancer,B.a new cancer treatment,C.the best way to beat cancer,D.two famous scientists,A,( )5. The passage is mai,练习(,6,),For us humans, one of the greatest experiences is to taste all kinds of delicious food.But for penguins, they cannot get a taste of this happiness.Thats because penguins cant actually taste the delicious flavors (,味道,)of their favorite food,fish!,Scientists from the University of Michigan examined the genome (,基因组,)of five species of penguins.,练习(6) For us humans, one o,They found that no one can taste umami (,鲜味,),the flavor of meat or fish,the BBC reported.,Many animals have five basic tastes: sweet, sour, salty, bitter and umami.But according to genetic data, penguins are believed to have only sour and salty tastes.,These findings are surprising and puzzling.And scientists dont have a good explanation for them.,They found that no one can tas,But they have a few ideas.,First, one of the umami genes doesnt work in cold temperatures.“Its about zero degrees when they eat cold fish,” Zhang Jianzhi,the lead scientist, told the Daily Mail, so even if the penguins had a functional (,功能的,)gene, it might not work when they needed it.,But they have a few ideas.,Second, penguins tongues (,舌头,) are very special which may have something to do with their lack of taste.Instead of being covered with taste buds which help to taste food, penguins tongues are very,spiky,.This is better for them to hold slippery (,滑的,) fish than tasting them.One study even showed that some types of penguins dont even have taste buds (,味蕾,).,Second, penguins tongues,However, penguins seem to be managing just fine.,“Their behavior of swallowing food whole, and their tongue structure and function, suggest that penguins need no taste perception,” said Zhang.,However, penguins seem to,( )1. How many tastes do penguins have?,A.Four. B.Three. C.Two. D.Five.,( )2. From the passage, we can learn that _.,A.temperatures can decide the umami genes of penguins,B.the umami genes in penguins would work when needed,C.penguins umami genes work well in cold temperatures,D.penguins tongues are very slippery,C,A,( )1. How many tastes do,( )3. The underlined word “,spiky,” means _ in the passage.,A.圆滑的 B.美味的,C.钉子似的 D.软绵绵的,C,( )3. The underlined wor,( )4. All of the following decide that penguins need no taste perception EXCEPT _.,A.they always swallow food whole,B.they live in cold temperatures,C.their tongue function is different,D.their tongue structure is special,B,( )4. All of the followi,( )5. The study finds that _.,A.different penguins have their own favorite fish,B.penguins have different genomes for the five tastes,C.penguins dont have any of the five basic tastes,D.penguins cant taste the flavor of fish,D,( )5. The study finds th,练习(,7,),Artificial intelligence (,人工智能,), or AI in short, is the science of giving computers and machines ability to think and work like humans.AI scientists and engineers have made a lot of cool technologies.,AI is rapidly catching up with the human ability to read faces.,练习(7) Artificial intelligen,As a result, facial recognition (,识别,) is used a lot in the world.Chinese police use this technology to,identify,criminals (,罪犯,).Once they caught a criminal when he attended a concert.It also checks the ID of ride-hailing (,网约车,) drivers and lets people pay for things with a smile.,AI is also used in self-driving cars, which are believed to be the future of driving.,As a result, facial recognitio,Most drivers may wave or nod at passers-by to let them cross the street, but self-driving cars dont have this ability.Car makers are testing a light signal system to help them “speak” to humans.The system can show what self-driving cars will do.For example, if a driverless car is yielding (,让路,), it will flash two white lights side to side.A rapidly flashing light tells passers-by,Most drivers may wave or nod a,that the car is about to speed up.,Service Robots also show you how powerful AI is.Imagine this,you come back home from school and your robot housekeeper is waiting for you at the door.After dinner, he teaches you to play the piano, just like a real music teacher.Such thoughts will soon happen in the real world.,that the car is about to speed,In the future, more and more service robots will become good home helpers.,AI is so powerful that it can help human beings and even replace us in many jobs.,In the future, more and more s,( )1. According to the passage, facial recognition is used for _.,A.driving cars,B.making people smile,C.calling the police,D.checking peoples information,D,( )1. According to the p,( )2. The underlined word “,identify,” probably means_ in Chinese.,A.减少 B.鉴定 C.消灭 D.帮助,( )3. In the future, a self-driving car may communicate with humans by _.,A.waving to them B.speaking to them,C.nodding at them D.flashing lights,B,D,( )2. The underlined wor,( )4. Which technology is used in real life according to the passage?,A.Service Robots at school.,B.Robots as ride-hailing drivers.,C.Facial recognition for payment.,D.Light signals for self-driving cars.,C,( )4. Which technology i,( )5. What can we learn from the passage?,A.People use AI in many different ways.,B.AI w
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