2020年广东省中考英语阅读理解B篇专练（10篇）有答案.docx

《2020年广东省中考英语阅读理解B篇专练（10篇）有答案.docx》由会员分享，可在线阅读，更多相关《2020年广东省中考英语阅读理解B篇专练（10篇）有答案.docx（16页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、 2020年广东省中考英语阅读理解B篇专练 （一）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.About nine o

2、ut 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 th

3、rough some difficulties.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.

4、In the past, left-handed children were forced to use their right hand.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.

5、Since 1976, there has been an unusual day for left-handers. International Left-Handers Day is celebrated on August 13th every year.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.Som

6、e of the most famous left handed people include Mark Twain, Winston Churchill, Barack Obama and Bill Gates.( )1. A baby may develop left-handedness 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

7、 his mouth often( )2. One problem for left-handed people is that _.A.their handwriting is awfulB.people think they are dangerousC.kitchen knives are too big for their left handsD.many things are made only for right-handers( )3. The underlined word “bias” means _ in Chinese in this passage.A.态度 B.偏见

8、C.恐惧 D.偏好( )4. From the passage, we know that left-handed 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( )5. The best title of this passage is _.A.International Left-Handers Day B.Challenges for Left-

9、handersC.Left-handedness, Nothing Strange D.Reasons for Left-handedness（二）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

10、ainst you.Here are some ways to change your home into part of your diet plan.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 likely to eat lots of food.If your

11、 home doesnt have enough window light, get more lights and flood the place with brightness.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 fo

12、od appear more appetizing , while cold colors make us feel less hungry.So when its time to repaint, go blue.Dont forget the clockor 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 t

13、ry 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.Downsize the dishes.Big serving bowls and plates can easily make us fat.We eat about 22 percent more w

14、hen 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.( )1. The passage is especially helpful for those who

15、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 caloriesC.reduce food intake D.feel less awkward( )3. The underlined word “appetizing” probably means _ in the passage.A.精致的 B.恶心的

16、 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( )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?（三）Animal

17、s 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

18、 away.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

19、 thick and hard leaves that are difficult for animals to eat.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 fig

20、ht against an attack by increasing the production of these chemicals.When a worm bites a tobacco leaf (烟叶)，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

21、).Only one experience with this kind of plant will teach an animal to stay away from it in the future. ( )1. A plant _ when it is under attack.A.can protect itself B.can run away C.can fight back D.must die( )2. According to the passage, the leaves of the holly have sharp prickles because _.A.they a

22、re beautiful to watchB.they stop people from pickingC.they stop grass-eating animalsD.they are lower( )3. An oak tree can protect itself because _.A.it has leaves with sharp prickles B.it has leaves with a sandy materialC.it has thick and hard leaves D.its leaves taste bitter( )4. What does the unde

23、rlined word “sandy” mean in Chinese? A.含盐的 B.坏掉的 C.含沙的 D.腐烂的( )5. The main idea of this passage is _.A.holly has its own ways to keep animals awayB.some plants leaves can protect themC.several ways to protect plantsD.plants can protect themselves in their own ways（四）A caterpillar (毛毛虫) that eats pla

24、stic 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.Experiments show the insect can break down the chemical bonds (键) of plastic in a similar way to a

25、bsorbing 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.However， caterpillars can make holes in a plastic bag i

26、n 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 proces

27、s of discovering the chemical secrets behind 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 enviro

28、nment.“We are planning to use this finding in a practical way to get rid of plastic waste，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.”( )1.

29、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 the above( )3. The key p

30、oint 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( )4. The underlined word “dump” means _ in Chinese.A.购买

31、 B.售卖 C.扔掉 D.降解( )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.Caterpillars may help to solve plastic pollution（五）What is the worst disease in the world? Many people might

32、 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.James P Allison from the US and Japanese researcher Tasuku Honjo

33、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.Th

34、is 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 can

35、cer and breast (乳腺) cancer, USA Today reported. 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 Quee

36、nsland in Australia developed a simple cancer test that can detect (检测) cancer in a patients blood.The test takes less than 10 minutes.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

37、 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.( )1. _ won the 2018 Nobel Prize in Physiology or Medicine.A.James P Allison B.Tasuku HonjoC.V

38、itrakvi D.James P Allison and Tasuku Honjo( )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 e

39、nough to effectively fight cancer cells.( )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( )4. According to the passage, the best way to beat cancer is to _.A.find it as early as possible B.eliminate the tumor completelyC.detect it in the patients blood D.dis

40、cover a new treatment( )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（六）For us humans, one of the greatest experiences is to taste all kinds of delicious food.But for penguins, they cannot get a

41、 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 five species of penguins.They found that no one can taste umami (鲜味),the flavor of meat or fish,the BBC repo

42、rted. 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.But they have a few ideas. First, o

43、ne 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.Second, penguins tongues (舌头) are very special whi

44、ch 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

45、蕾).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.( )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 penguinsB.the umami genes in penguins w