2020高考人教版英语-限时规范练9(必修2 Unit 4)

限时规范练9(必修2Unit4)核心素养关键词:培养学生人与自然、保护动物的思维意识一、阅读理解AWhat do you usually do when a flying insect lands on your arm? Most likely you blow it away.But what if that bug were a ladybug (瓢虫)? Then chances are you would let it stay.What is it about ladybugs that we like?Farmers once thought ladybugs were a good luck sign.A ladybug in the field meant that the crops would be successful and the weather would be good.The farmers may have been exaggerating (夸大) about what a very small bug can do,but in fact ladybugs do help out with the crops.They eat harmful insects.Actually,it is not the adult ladybug that eats the other insects.It’s the ladybug larvae (幼虫).Ladybugs lay their eggs on leaves that are covered with aphids or other insects.When the larvae come out of the eggs,they are very hungry and will eat mites,aphids,mealybugs,green flies,and other crop-destroyers.A single ladybug larva can eat over 1,000 aphids in one day.In the 1800s,ladybugs were brought all the way from Australia to California and set free among orange trees that were dying from being eaten by insects.The little red and black “eating machines” completely saved all the trees.Ladybugs go about their daily business without worrying much about anything.Very few birds or insects will eat a ladybug because it gives off something that is dangerous to dybugs also protect themselves by playing dead.They fall off leaves and remain very still until their enemy goes away.So next time you see a ladybug,think about what it may be up to.Maybe it is off to save an orange tree.Maybe its next move will be to fall off a leaf and play dead or stand up to a bird about 100 times its size.Maybe it’s letting you know that the weather will be good tomorrow.Who knows? Ladybugs are special that way.1.What do we know about mites and aphids?A.They do harm to the crops.B.They eat more than they should.C.They are food for adult ladybugs.D.They are the enemy of ladybug larvae.2.Why were ladybugs brought from Australia to California in the 1800s?A.To save orange trees.B.To do research on them.C.To increase their number.D.To report the weather for farmers.3.What does the underlined part “stand up to” in the last paragraph probably mean?A.Play with.B.Worry about.C.Get along with.D.Fight back against.BTwo books have been developed to help designers,developers and homeowners make it easier and safer for the blind to find their way to,into and through buildings and large public spaces.The books were created by the Cooperative Research Centre for Construction Innovation (建筑创新),a programme which helps solve the problem of finding ways around buildings and public spaces.Construction Innovation CEO Keith Hampson says any wayfinding system is more than just signs.“It includes buildings,inside design and lighting,” Keith says.He says people having problems with their eyesight use these communicative signs to make moving around spaces easier.For example,a good sign may include tactile (可感触到的) lettering — Braille and a tactile ground surface.The project won the 2007 Disability Action Week Award for Building Accessible Housing and Environments.“The project has received increased national attention since the award last year,” Keith says.“Most importantly however,we have helped to raise the awareness and need for a wayfinding system across the building and construction industry.”The Department of Public Works was a key member in the project.Team leader Ron Apelt says people with eyesight problems are often forgotten in the planning and design of buildings and public open spaces.“Our books are mainly for new buildings and the immediate spaces surrounding these buildings,” Ron says.“However,the books can also be used for any plans for old buildings and improving wayfinding around places such as universities,hospitals and schools.”“They can also be used in busy spaces like shopping centres as the design ideas remain unchanged no matter what the spaces and places are like.”4.What are the books mentioned in the text about?A.How to improve eyesight.B.How to build high-quality houses.C.How to make buildings blind-friendly.D.How to develop a good sense of direction.5.What does the wayfinding system include according to Keith?A.A flat ground surface.B.Signs that can be touched.C.Spaces that are wide enough.D.Lighting that’s not too strong.6.What has happened since the project won the award?A.More blind people are getting help.B.More people are trying to win the award.C.More people are realising the system’s importance.D.More people are interested in the construction industry.7.What does Ron think of the books?A.They are of little real use.B.They will never be forgotten.C.They came as no surprise to the public.D.They will make a good guide for builders.二、七选五Deciding whether or not to take part in an extracurricular (课外的) activity can be a challenge.Before signing up to play on the volleyball team,first consider the advantages and disadvantages of such a decision.1 Students are successful when they take part in many activities.They do well in their classes and feel more connected to school.Research shows that students in extracurricular activities have better attendance and grades.Extracurricular activities also help students make new friends and lasting relationships.2Even though we became friends a long time ago,we are still close today.While these activities have many advantages,students should consider the downside as well.3 Extracurricular activities can be too much for students who do not practice good timemanagement.Students need to be good at managing their time between different activities.Another downside to extracurricular activities involves transportation.4 This situation limits students’ extracurricular choices to those outside the school and closer to home.A few of my classmates joined the school’s cultural club.They later discovered that it met after school.These students dropped out of the club because they had to catch their buses.Only you can decide if extracurricular activities are right for you.Activities outside the school can help you succeed in many areas of your life.5 Are you up for a challenge?A.We were both in the eight-and-under age group.B.Some clubs or sports meet before or after school.C.One downside is that it can create a busy life for students.D.Many students are tired from all the things they have to do.E.Taking part in extracurricular activities has many advantages.F.I met my best friend when we were on the YMCA swim team.G.However,you need good time management skills to deal with a busy life.三、语法填空The jaguar (美洲豹) is the largest cat in the Americas.A hundred years ago,jaguars 1.(find) everywhere from the southwestern United States to Argentina,in South America.Today,jaguars are an endangered species throughout their 2. (nature) habitat and have been lost from 50 percent of their territory.Today they live 3. (most) in the Amazon rainforest.And jaguars aren’t the only animals losing their homes — according 4. the International Union for Conservation ofNature,habitat loss 5. (be) the main threat to about 85 percent of all endangered plant and animal species.Tropical rainforests cover only about 7 percent of Earth’s land,but they’re home to about half of all known plant and animal species.Most 6. (scientist) agree that about 80,000 acres (an acre is equal to 4,047 square metres) disappear every day when trees are cut down and land is cleared for farms.Trees also play 7. important role in climate change.Fewer forests mean that more greenhouse gases remain 8. (trap) in the atmosphere,the mixture of gases that surrounds the Earth.Grasslands,underwater habitats,and wetlands are also at risk.For example,the World Wildlife Fund reports that about half of the world’s wetlands 9. (disappear) since a hundred years ago as a result of being drained (排水) for either farmland 10. other industries.That means less space for animals to feed and raise their young.参考答案限时规范练9(必修2Unit4)一、【篇章导读】本文是说明文。