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1、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(
2、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-
3、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
4、 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
5、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 challe
6、nges 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-han
7、dedness when _.A.nine out of ten babies do soB.his mum is in her twenties at his birth C.his mum gives birth to him at an older ageD.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 awfulB.people think th
8、ey are dangerousC.kitchen knives are too big for their left handsD.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-hande
9、d children _ in the past.A.lived a comfortable life B.were not considered normalC.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-handersC.Left-handedness, Noth
10、ing 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 ag
11、ainst 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 placesand so more likel
12、y 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 thos
13、e 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 clockor the radio.People who eat slowly seem to consume about 70 fewer calories (卡路里) per mea
14、l 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 cl
15、ockor,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) int
16、o 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
17、more caloriesC.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 musicC.use smaller spoons D.turn down the lights,D,C,(
18、 )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
19、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)
20、 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 a
21、nimals 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 a
22、ttack 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 poi
23、sonous 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
24、, the leaves of the holly have sharp prickles because _.A.they are beautiful to watchB.they stop people from pickingC.they stop grass-eating animalsD.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 sa
25、ndy materialC.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 awayB.some
26、 plants leaves can protect themC.several ways to protect plantsD.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 discov
27、ered 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
28、.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
29、 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 beh
30、ind the natural degradation of plastic.They think something in the caterpillaras well as the insect itselfmight 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 findin
31、g 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 toward
32、s 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 experimentsC.it can degrade plastic D.it makes no waste( )2. Plastic is used for _.A.making shopping bags B.food packagingC.one-off raincoats D.all of th
33、e 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 researchB.the chemical process which degrades the plasticC.the caterpillar plays a key role in breaking down plasticD.how to speed up the discovering of the chemical secrets,D,(
34、 )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 plasticB.Scientists are working towards plastic degradationC.Scientists have found the chemical processD.
35、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
36、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
37、 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 a
38、pproved 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 possib
39、le 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
40、 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 comple
41、tely 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 HonjoC.Vitrakvi D.James P Allison
42、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
43、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 co
44、mpletelyC.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 treatmentC.the best way to beat cancer D.two famous scientists,A,( )5. The passage is mai,练习(6),For us humans, o
45、ne 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 foodfish! Scientists from the University of Michigan examined the genome (基因组)of f
46、ive 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 tast
47、es. 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 scien
48、tist, 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
49、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 swallowi
50、ng 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 o
