当前位置: 试题详情
    Whales are threatened by a variety of human activities off the West Coast of the United States,including fishing,ship traffic,and pollution.They have bad effects on whale populations,but are rarely addressed by current whale-protection policies in California,according to a study from the University of California,Davis.
    The study,published for open access this week in the journal Marine Policy,examines the main causes of death for nine whale species in the California Current Ecosystem,which stretches from British Columbia,Canada to Baja California,Mexico.The whales considered in the study include gray,blue,fin,minke,North Pacific right,and killer whales.
    "We find that it is people that deem fishing causes whale death," said co-leading author Eliza Oldach. "But a number of human activities have made the modern ocean a really tough environment for whales to survive.We're excited about efforts that look broadly to rebuild healthy oceans."
    The report found that main contributors to whale death are currently,targeted with relevant policy responses:noise,water quality and marine (海洋的) rubbish.But three other threats-nutritional stress,disease and predation (捕食) -need to also be considered to provide a more whole approach toward managing whale deaths.
    "Gray whales migrate (迁徙) over 5,000 miles between their breeding grounds at either end of the California Current," said co-leading author Helen Killeen. "Throughout their journey,they must pass through a large number of human activities,fighting with changes to their environment caused by climate change."
    The study comes as the California Ocean Protection Council (COPC) aims to develop a plan for achieving zero death for whales in the California Current Ecosystem this year.Achieving such a goal requires understanding the key drivers of whale deaths and opportunities for policy change,the report said.

(1)Which activity will lead to whales' death?

A.Going fishing with your friends in a river.
B.Playing with your friends beside the sea.
C.Going sailing with your family on weekends.
D.Throwing rubbish in the sea as you are playing.
(2)What's meaning of the underlined word "deem" in Paragraph 3?

(3)What can we learn from Helen's words?

A.Gray whales are fond of travelling.
B.Gray whales' migration is full of danger.
C.Human being is the only killer of whales.
D.Whales' death is mainly caused by climate.
(4)What should COPC do prevent whales' death?

A.Get rid of the present policy.
B.Plant more trees along the sea.
C.Know what actually leads to it.
D.Find a right place for them to live.
  • 1.    Swot satellite is scheduled to be launched Thursday morning to conduct a comprehensive survey of Earth's vital resource.By using advanced microwave radar technology it will collect height﹣surface measurements of oceans,lakes and rivers in high﹣definition detail over 90% of the globe.It's rally the first time to observe nearly all water on the planet's surface.
        The major mission is to explore how oceans absorb atmospheric heat and carbon dioxide in a natural process that adjusts climate change.Oceans are estimated to have absorbed more than 90%,of the extra heat trapped in the Earth's atmosphere by human﹣caused greenhouse gases.Swot will scan,the seas and precisely measure fine differences in surface elevations (高度)(漩涡),where much of the oceans' decrease of heat and carbon is believed to occur. "Studying the mechanism will help climate scientists answer a key question:What is the turning point at which oceans start releasing,rather than absorbing,rather than limiting it," said NadyaShiffer
        By comparison,earlier studies of water bodies relied on data of rivers or oceans taken at specific,points,requiring scientists to fill in data gaps through extrapolation (外推法).Thanks to the radar instrument
        "Rather than giving us a line of elevations,it's giving us a map of elevations,and that's just a total game changer,Swot freshwater science leader.

    (1)What do the underlined words "vital resource" in the first paragraph refer to?

    (2)What is the major mission of Swot satellite?

    A.To explore where oceans absorb heat and CO2.
    B.To explain why greenhouse gas comes into being.
    C.To identify when global warming is worsened.
    D.To study how oceans influence climate change.
    (3)What is an advantage Swot has over previous satellites?

    A.It fills in data gaps automatically by extrapolation.
    B.It contributes to mapping the observation accurately.
    C.It covers specific rivers and oceans in one dimension.
    D.It keeps track of the weather change at any time of day.
    (4)Which is the most suitable title for the text?

    A.First Global Water Survey from Space
    B.Successful Launch of Swot Satellite
    C.A Breakthrough in Space Travel.
    D.A Solution to Climate Change
  • 2.    TCM is short for Traditional Chinese Medicine.TCM,which has a history of more than 2,500 years in China, (1)
    (play) a big role in treating patients infected with COVID-19 so far.Let's look at (2)
    it works.TCM cannot kill the virus, (3)
    it can treat patients by removing the trash which causes illness out of human body. (4)
    the trash,the virus will have no room to survive.
        In early February,102 mild patients in Wuhan received therapy with Jinhua Qinggan Granule (颗粒).As (5)
    result,it took only one and a half days for most patients taking it(6)
    (reduce) fever.An experiment of 710 cases (7)
    (conduct) by over 30 hospitals showed the Xuebijing Injection (注射剂),combined with regular (8)
    (treat),can reduce the mortality rate of severe patients by 8.8 percent.(9)
    (basic),TCM is believed to be more effective for disease prevention,while western medicine is (10)
    (good) for serious illnesses.
  • 3.    Nowadays,the doctor has been asking people to take in less salt.New electric chopsticks in Japan may make it possible to make food taste saltier than it really is.
        Miyashita,a professor at Meiji University,worked with Kirin Holdings Company to develop the special chopsticks.
        The chopsticks come with a small computer.When you wear the computer on your arm,it can produce a weak electric current (电流) to free up the sodium ions (钠离子) in your food.As a result,you get a salty taste without the use of salt.
        The purpose to create the chopsticks is to stop the Japanese from taking in too much salt.The traditional Japanese food includes a lot of salt.A Japanese adult eats about 10 g of salt every day.The daily amount of salt,however,should be kept at around 5 g.High salt intake can cause many illnesses,including high blood pressure and strokes (中风).
        Miyashita and Kirin will continue to improve their electric chopsticks.They hope to be able to start selling the chopsticks in a short time.

    (1)What is the third paragraph mainly about?

    A.How much the chopsticks cost.
    B.What is put into the chopsticks.
    C.How the chopsticks make food salty.
    D.When we should use the chopsticks.
    (2)Why does Miyashita's team produce the chopsticks?

    A.To stop the Japanese from taking in more salt.
    B.To have a good invention for the world.
    C.To change the use of traditional chopsticks.
    D.To help treat the people with high blood pressure.
    (3)What can we infer (推断) from the last paragraph?

    A.The chopsticks have already been widely used .
    B.The chopsticks will sell well in the future.
    C.The chopsticks are still under development.
    D.The chopsticks can make Miyashita richer.
    (4)What is the theme of the passage?

粤ICP备10006842号  公网安备44030502001846号 
©2010-2024 jyeoo.com 版权所有
APP开发者:深圳市菁优智慧教育股份有限公司 | 应用名称:菁优网 | 应用版本:4.8.2  |  隐私协议      第三方SDK     用户服务条款广播电视节目制作经营许可证出版物经营许可证网站地图本网部分资源来源于会员上传,除本网组织的资源外,版权归原作者所有,如有侵犯版权,请立刻和本网联系并提供证据,本网将在三个工作日内改正