1、综合检测(二).阅读理解(共15小题；每小题2.5分，满分37.5分)ADear Parents，Singapore is currently experiencing a historically high number of dengue(登革热) cases.The National Environment Agency (NEA) is strongly encouraging all residents staying in dengue cluster areas to：Spray insecticides in dark corners at home (e.g.behind c
2、urtains and under beds)；Apply insect repellent(驱虫剂) regularly；Wear longsleeve tops and long pants.Our school is located in or near a dengue cluster area with 208 cases by 28 July 2020.To protect your child from dengue，NEA will be providing a bottle of repellent to him/her，for your familys use.In add
3、ition，RVPS will also be providing each RVian two complimentary pieces of mosquito patches.You are strongly advised to consider applying insect repellent on your children before they leave home for school.Students are also encouraged to bring the insect repellent to school for reapplication，before th
4、ey leave school for home.Our teachers will also be conducting a lesson on dengue prevention for all RVians this Friday.Do remind your family members to apply insect repellent too.The guideline on the use of insect repellent spray is attached for your reference.Thank you.Warm regards，1What is the pre
5、sent situation of the school?AIt has been shut down.BIt has over 208 dengue cases.CIt is likely to have dengue cases.DIt has conducted dengue prevention lessons.2What should residents do according to the National Environment Agency?AStay in dengue cluster areas.BApply insect repellent regularly.CWea
6、r shortsleeve tops and long pants.DSpray insect repellent everywhere at home.3Whats the purpose of the letter?ATo call on all the parents to stay at home.BTo teach parents how to use insect repellent.CTo remind children to bring insect repellent to school.DTo advise parents to protect the children f
7、rom dengue.BIts fall，and that means some trees are losing their leaves.Many people might see cleaning up all that yard waste as tiring.But Bryant Liu，13，looked at his leafblanketed lawn and saw a potential source of energy.Right now，most people fuel their cars with petrol made from fossil fuels (化石燃
8、料)，which are not renewable.So scientists are making biofuels.For example，engineers can produce bioethanola type of alcohol fuelfrom sugars in plants.Turning to dead leaves，however，presents a challenge for biofuel developers.Dead leaves have sugar，but they also have lots of lignina tough substance th
9、at strengthens the walls of plant cells.To get to the sugars inside，scientists first have to break down the lignin with chemicals.Bryant wanted to see if he could get sugar for biofuels out of dead leaves by pretreating those leaves with acids or bases (碱)The young researcher gathered up three garba
10、ge bags full of leaves from his yard.Then he went to his fathers laboratory.He broke the dead leaves into pieces，and then carefully loaded equal numbers of them into test tubes.Afterwards，he added either an acid solution or a base solution at different concentrations to the test tubes.“That was real
11、ly fun，” Bryant says.“It made me feel like a real scientist.” Finally，the teen found that pretreating leaves with either an acid or base encouraged sugar to get out from his yards leaves.However，he explains，the process is still too expensive.Bryant now wants to take the sugars from his finding to th
12、e next stepmaking ethanol.If he could create a better method for producing biofuels，he explains，people would need fewer fossil fuels and “have a renewable energy source for the future”And，Bryant adds，if people use all those dead leaves for biofuels，he and other kids may have to do less cleaning each
13、 fall.4What does the author intend to do in Paragraph 2?AReflect on Bryants experiences.BUse examples to support the topic.CAdd some background information.DIntroduce a new topic for discussion.5What is the purpose of Bryants experiment?ATo test the toughness of the lignin.BTo find the differences b
14、etween acids and bases.CTo identify the functions of the elements of leaves.DTo get sugar from dead leaves using acids and bases.6What is Bryants next step?ATo produce biofuels by using the sugars from dead leaves.BTo promote the use of biofuels worldwide.CTo make his pretreating process less costly
15、.DTo encourage other kids to collect dead leaves.7Which of the following best describes Bryant?AHe is caring.BHe is demanding.CHe has a good sense of humor.DHe has a spirit of exploration.CNo one ever said science education was easy.Certainly the concepts we teach，like conservation of momentum (动量守恒
16、) or quantum mechanics (量子力学)，can be hard to grasp.But what really makes our reaching complicated is that were also trying to teach a deeper lesson at the same time to help students understand the nature of science itself.All too often，young people get the impression that science is about learning c
17、ertain “laws” and then applying them to different situations.After all，thats what we make them do on tests，to show that theyve been doing the work.But thats not it at all.Science is the process of building these concepts through the collection of experimental evidence.And while Im on it lets call th
18、ese concepts what they really are not laws，but models.Science is all about building and testing models.Its difficult to help students understand that aspect of science when we just give them the models to begin with.Sure，in physics we often include historical or mathematical evidence to support big
19、ideas，but that often isnt enough.Of course，we cant start from scratch.If students had to build their own models from the ground up，it would be like trying to learn programming by inventing computers.As Isaac Newton is supposed to have said，we stand on the shoulders of giantsWe must take models built
20、 by others and go from there.What Id like to suggest is that this actually provides a great way into the adventure of science and an opportunity to meet our objectives as educators.If you can create a situation that challenges students assumptions and produces conceptual conflict，thats a great oppor
21、tunity for learning.8What is the misunderstanding of teaching science?AIts complicated.BIt focuses on the nature of science.CIts very difficult.DIt lies in teaching and testing “laws”9Which way to teach science is highly recommended by the author?AEncouraging students to always start from scratch.BP
22、roviding students with some models to follow suit.CGuiding students to begin with models built by others.DOffering students proof to support important concepts.10The author cites Isaac Newtons words to Ajustify the experimentBpraise the statementCshow the achievementDsupport the argument11What is th
23、e best title of the passage?AScience TeachingBConcept BuildingCScience Learning DConcept ConflictingDTo have the onceinalifetime chance to see rare Black Sea dolphins，people in the landlocked Russian town of Kaluga dont have to leave their city.In the parking lot of a large shopping mall is a white
24、aquarium：the Moscow Traveling Dolphinarium.Russias dozen or so traveling aquariums are seen as a way to bring native wild animals to people who might never see the ocean.Owners and operators of wildlife tourism attractions say their animals live longer than wild animals，and the animals under their c
25、are are with them for life.Theyre family.Alla Azovtseva，a longtime dolphin trainer in Russia，shakes her head.“I dont see any sense in this work.My conscience bites me.I look at my animals and want to cry，”says Azovtseva.She has spent 20 years training dolphins to do tricks.But along the way shes gro
26、wn heartsick from the forcing highly intelligent，social creatures to live a lonely life in small tanks.“Dolphins have evolved to swim great distances and live in complex social groupsconditions that cant be reproduced in a pool，”she says.“I would compare the dolphin situation with making a physicist
27、 sweep the street，”she says.“When theyre not engaged in the performance or training，they just hang in the water facing down.Its the deepest depression.”What people dont know about aquarium shows in Russia，Azovtseva says，is that the animals often die soon after being put in captivity(圈养)，especially t
28、hose in traveling shows.And Azovtseva，making clear shes referring to the industry at large in Russia，says she knows many aquariums quietly and illegally replace their animals with new ones.Its illegal to catch Black Sea dolphins in the wild for entertainment purposes，but aquarium owners who want to
29、increase their dolphin numbers quickly and cheaply buy dolphins caught there.Because these dolphins are acquired illegally，theyre missing the microchips that captive dolphins in Russia are usually tagged with as a form of required identification.Some aquariums get around that，Azovtseva says，by cutti
30、ng out dead dolphins microchips and putting them into replacement dolphins.12What can be inferred about the town of Kaluga?AIt is a seaside town.BIt is a long way from the ocean.CIt is full of traveling aquariums.DIt is well known for dolphins.13What does Azovtseva really mean by shaking her head?AD
31、olphins in aquariums are actually treated badly.BHer work as a dolphin trainer is really boring.CDolphins are more intelligent than people think.DPeople know little about how dolphins live.14What is the use of the microchips?ATo show the dolphins are used legally.BTo show the dolphins can be replace
32、d.CTo prove the dolphins are still alive.DTo prove the dolphins are from the Black Sea.15What is the purpose of the text?ATo give an account of how an aquarium works.BTo draw peoples attention to dolphin society.CTo uncover the dark truth behind aquarium shows.DTo report the dolphin situation in the
33、 world.阅读七选五(共5小题；每小题2.5分，满分12.5分)In 2010，a huge earthquake hit Haiti，causing the deaths of over a hundred thousand people and millions of dollars worth of damage. 16 On this occasion，funds were raised with amazing speedwithin a week of the quake，the American Red Cross had raised $22 million.The rea
34、son？People were donating via their mobile phones. 17 Gone are the days when people donated door by door.In todays world of computers，smartphones，tablets，and smartwatches，charities can now reach more people than ever before.Social media in particular has had a great impact on charity. 18 This enables
35、 charities to raise money extremely quickly，as in Haiti.And the quicker aid can be delivered，the more lives can be saved.Individual fundraising has also benefited.Most people are now so wellconnected through sites like Facebook that asking people to contribute to your chosen cause is easier than eve
36、r.New，innovative ways of donating are being thought up all the time.For example，if you want to support a good cause and keep fit at the same time，you can use an app called Charity Miles. 19 For every kilometer you cover，the apps sponsors will make a donation to a charity of your choice.Theres also S
37、napdonate，which allows users to donate simply by taking a photo of a charitys logo with their smartphones.The app recognizes the logo and allows users to immediately make a donation through their phones.This cuts out the need for entering payment details on charity websites，and makes the process of
38、donating small amounts to multiple charities much simpler.Apps like these are growing in number，and that can only be a good thing. 20 APeople were eager to aid others in trouble.BThe app can track the distance you run or cycle.CNews of disasters spreads quickly around the world.DCharity helps to ref
39、resh the development of social Media.ETechnological advances have changed how charities work.FThe international community jumped into action to provide aid.GIn future，we could support our chosen cause more easily and more often.完形填空(共15小题；每小题1分，满分15分)Denver，Colorado is one of the fastest growing cit
40、ies in America.It also has one of the biggest populations of 21 young people.A Denver coffee shop is seeking to solve the problem.The Purple Door Coffee Shop employs and 22 homeless young people，giving them a second 23 to make a new start.For many years，Kevin Persons lived on the 24 Today，he is work
41、ing in a bar，serving coffee.He is also working to move off the streets and into a home.The owners of the twoyearold nonprofit 25 three to four young adults per year.Shelters such as Urban Peak，where Kevin was staying， 26 young people who are ready to commit to working.Madison Chandler，cofounder of P
42、urple Door，and her partner meet with their workers 27 each week.They talk about topics 28 from mental health，finance to customer service.They also 29 a life coach to make sure the workers have the 30 and skills that will set them up for success.Kevin 31 that he is learning what he needs to 32 the st
43、ruggles of homelessness and live a full life.For Madison Chandler，providing these young adults with 33 and education and helping them become confident and 34 is worthwhile.The most 35 part of her job is helping them achieve a life for themselves that they have dreamed of.21A.hopelessBhomelessCpowerl
44、ess Duseless22A.controls BtreatsCrequires Dtrains23A.change BcharityCchance Dcompromise24A.roofs BbridgesCbanks Dstreets25A.hire BfireCcontact Dexchange26A.remind BindicateCrecommend Dsuggest27A.accidentally BproudlyCparticularly Dindividually28A.including BrangingCspreading Dextending29A.advertise
45、BteachCprovide Dpromote30A.support BimaginationCproduction Dsupply31A.lies BregretsCrecognizes Dclaims32A.keep BleaveCawait Drecall33A.adjustment BdevelopmentCmovement Demployment34A.humorous BindependentCdetermined Dstubborn35A.rewarding BencouragingCastonishing Damusing.语法填空(共10小题；每小题1.5分，满分15分)Lu
46、llabies (摇篮曲) bring mom and kids together.As the COVID19 pandemic began changing life globally，physical distancing 36._ (particular) changed the way we connect.At present，nearly 70 percent of health workers worldwide 37._ (make) up of women.Apart from looking after the patients，they also face the ch
47、allenge of how best to care for their own families.Among them is Elizabeth Streeter，38._ works as a nurse on the COVID19 floor of her hospital in Massachusetts.She made a difficult decision 39._ (stay) away from her three boys in early April last year，to avoid exposing them 40._ the virus.During the evenings，Elizabeth connected with her kids by phone and sang their favorite lullabies while fighting through tears.For the young mother，ensuring her childrens 41._ (safe)
