本刊试题研究中心
New technology,however,is helping scientists explore these 3._______(hide)worlds.For example,scientists are using 4._______underwater vehicle called Deepsea to explore seamounts—underwater mountains.
Scientists have used Deepsea to study Las Gemelas,an area of seamounts near Costa Rica.A huge 5._______(vary)of species lives around Las Gemelas.Some of these species may have chemicals 6._______can help people fight illnesses.
The 7._______(deep)location of the Earth is the Mariana Trench in the Pacific Ocean.The ocean floor there is approximately 11,000 meters deep.In 2012,filmmaker and explorer James Cameron reached the Mariana Trench in a vehicle called Deepsea Challenger.He was the first 8.________(complete)the journey alone.Cameron took 9._______(photo)and made videos on the ocean floor.Deepsea exploration also helps us in other ways.For example,we are learning how underwater earthquakes cause tsunamis.As Cameron said,“This is the 10._______(begin)of opening up a new frontier.”
The traditional Chinese lunar calendar divides the year into 24 solar terms.The Awakening of Insects(惊蛰)falls on March 5 and ends on March 19 this year.
The Awakening of Insects signals 1._______rise in temperature and increased rainfall.As the third solar term in the lunar year,2.________(it)name suggests the fact that animals sleeping in winter are awakened by spring thunder and that the Earth begins to come back 3._______life.It is the key time for spring agricultural activities.It is also a good time for people 4._________(enjoy)the fun outdoors,especially for people living in the city.Driving to the suburbs,5.________(fish)in a lake or enjoying the singing birds will make for a perfect weekend in spring.The most popular fruit in this season 6._______(be)pears.
The custom of eating pears is 7.________(wide)practiced around the Awakening of Insects.As the weather gets warmer and the air becomes 8._______(dry),people tend to feel their mouths and tongues are dry,9._______can cause colds or coughs.Pears are sweet,juicy and cold,moistening(使变得湿润)the lungs to arrest a cough.10._______,pears are recommended during the Awakening of Insects.
Though most big companies begin as small businesses,not all small business owners are entrepreneurs(企业家).If we look 1._______(much)closely at its definition,we can find three common features.
Creating.Entrepreneurship generally means offering a new product,applying a new technique or technology,2._______(open)a new market,or developing a new form of organization for the purpose of producing a product.
称取0.2 g(精确至0.000 1 g)试样于300 mL烧杯中,盖上表面皿,加5 mL盐酸(试样中硅含量高时加0.1 g氟化氢铵),于低温处加热溶解,加10 mL硝酸(硫含量高可加1~2 mL溴)。继续加热溶解,溶解完全后取下,加10 mL硫酸,蒸发至冒烟并保持5 min,冷却,吹洗杯壁,加50 mL水,5 mL酒石酸溶液,加热煮沸数分钟,使可溶性硫酸盐溶解,冷至室温,静置3 h以上,使硫酸铅沉淀完全。
Running a business.A business uses resources 3._______(produce)goods or services.Entrepreneurship means setting up a business to make money.
Taking risks.The term “risk” means that the result can't 4.________(know).Entrepreneurs,therefore,are always working under 5._______certain degree of uncertainty.They can't know the results of many of the 6._______(decision)that they have to make.Thus many of the steps they take are inspired mainly by their 7._______(confident)in creation and their understanding of the business environment.Entrepreneurs are people 8._______start companies to develop new or 9.________(improve)products.They struggle to meet a need that's not being met,10._______their goal is to grow the business and finally expand into other markets.
My dad is an enthusiastic runner who 1.________(great)influenced me when I was young.So I was very sporty before the age of 14.However,when my family moved,my new school didn't pay much attention 2._______sports and had no after-school activities like football or running.Over the next few years,I 3.________(stop)exercising apart from during physical education lessons at school.It looked like I was 4._______(health);however,I was not.
One day,I was late for a bus,tried to run after it and in under a minute was out of breath.This made me realize how unfit I was.5._________(help)myself get in shape again,I made a 6._______(decide)that I would take up a kind of sports.
A friend of mine suggested a swimming pool 7._______she goes to a few times a week.Now,I'm a swimming lover!I find swimming in the pool very 8._______(relax).I swim for 9._______hour three times a week.I hope that I will soon start to feel the benefits of regular exercise,and will become 10. (fit)than before.
Sanxingdui is believed to have sat at the heart of the Ancient Shu Country,which historians know 1._______(relative) little about due to few written records.
More than 50,000 ancient artifacts 2._______(find)at Sanxingdui since the 1920s,3._______a local farmer accidentally came upon a number of relics at the site.A major breakthrough 4.________(occur) in 1986,with the discovery of two ceremonial pits 5.________(contain) over 1,000 items,elaborate and well-preserved bronze masks included.Many of the items are now 6._______display at an on-site museum.
The site has revolutionized experts'understanding of how civilization developed in ancient China.In particular,evidence of a unique Shu culture suggested that the kingdom developed independently of neighboring societies in the Yellow River Valley,which was considered to be 7._______cradle(摇篮)of Chinese civilization.
The discovery of silk fibres and the remains of textiles may also expand 8._______(we) understanding of the Shu.Head of the excavation team,Tang Fei,said in a press conference that the discovery indicates that the kingdom“was one of the important 9._______(origin) of silk in ancient China”.
Though not yet 10.________(recognize) as a UNESCO World Heritage Site,Sanxingdui is on the organization's “tentative list” for possible future inclusion.
A Chinese company says it has created a new facial recognition system that can identify people even if they 1. (wear)masks.Engineers at Huihua Technology Co.Ltd.say their system is the first to be created to 2._________(effective)identify people wearing face masks.
Huihua is now selling two main 3._______(kind)of products that use the new technology.One performs“single channel” recognition,which is designed to be used at the 4._________(enter)to buildings.The other product is a “multi-channel” recognition system,which can identify individuals in 5._______crowd of up to 30 people“within a second” by 6._______(use)groups of surveillance(监视)cameras.When people wear a mask,the recognition rate can reach about 95%.And the system's success rate for people not wearing a mask 7._______(be)about 99.5%.
8._______was not immediately clear how Chinese citizens were reacting to the new technology.The Chinese government has already been using other surveillance tools in the fight against the new coronavirus.9._______some citizens have expressed opposition to such tools,many others seem to have accepted the methods as a way 10._______(deal)with the current health emergency.
Chocolate,cheese and skiing 1._______(be) the reasons to visit Switzerland.Zopf,the country's national bread,however,is another attractive point.
Legend has it that the zopf first appeared in the 15th century as part of 2._______ancient burial tradition.When a woman's husband died,she would bury her braided(编辫子的)hair in the tomb in order 3._______their souls reunite.Later,this tradition was abolished and replaced by a new one 4._______a woman would leave a braided zopf loaf in the tomb.While this story is just a tale,it is popular in Switzerland.Another more likely explanation of this bread's evolution is the 5._______(grow)of bakers'associations around this time,with the zopf 6._______(become) so popular that it was often given as a gift on celebratory days.This tradition lives on today and it's 7.(tradition) to gift a zopf on Swiss National Day (1st August).It's also known as Sunday bread,when you can expect the table 8.________(load) with a sizeable loaf,butter and jam.
Zopf is 9.________(particular) popular in Switzerland's Emmental region,an area where you can find 10.________(loaf) stretching up to a metre long.A writer once described in a story that a zopf was as big as a one-year-old child.
Whether you see red,feel blue,or go green with envy may depend on what country you call home.And when they were given data on how 1._______person associated colors with emotions,researchers could correctly predict where he or she 2._______(be)from.The scientists surveyed 711 people from China,Germany,Greece,and the United Kingdom.3.________(volunteer) read the words for 12 colors,such as “green” and“black”.4._______(them)then indicated what emotion the colors brought to mind,and how strongly the color was tied to the feeling.Across the board,the colors 5._______inspired the most emotion were red,black and pink,but brown and purple didn't have that strong associations.For example,black was associated with 6.________(sad) across all countries,and red with positive emotions 7._______love and pleasure,along with negative feelings such as anger and hate.Still,there were some 8.________(culture) differences.For instance,brown was a 9._______(strong)association with disgust in Germany than in other countries.People from Greece were the only group to associate purple firstly with unhappiness.White 10._________(consider) as more negative in China (people there traditionally wear white to funerals),and yellow was positive in all countries except Greece.