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The third-generation hybrid rice(雜交水稻)which was developed by Yuan Longping,the "father of hybrid rice",and his team ran its first public yield(產(chǎn)量)monitoring from Monday to Tuesday and achieved high output.The final yield of the tested variety,G3-1 S/P19,came to1046.3 kg per mu(about 667 square meters),based on two pieces of land in Qingzhu Village under the city of Hengyang in central China's Hunan Province.
   "Some previous high-yielding hybrid rice varieties in China took 160 to even 180 days from sowing(播種)to harvesting,while the figure was shortened to around 125 days for the new variety.This is one of the most important features(特征)of the third-generation hybrid rice that can reduce the use of pesticides(殺蟲(chóng)劑)and fertilizers(化肥) ,thus reducing cost and improving production efficiency." said Qian Qian,the deputy director of the China National Rice Research Institute.
   Unlike the previous two generations that required a large amount of water and fertilizers as well as demanding growing conditions and technological support,the third-generation hybrid rice is easier to be cultivated(種植) by ordinary farmers.So the soil,altitude and climate of the test site were not "ideal conditions" carefully selected beforehand but were close to the paddies (稻田) of ordinary farmers.
   Nowadays.China's average yield of rice is about 500 kg per mu.Ordinary farmers can produce 600 kg to 700 kg of rice per mu by growing some excellent second-generation hybrid rice varieties.However,under the same planting conditions and environment,the yield of the third-generation hybrid rice could reach 800 kg per mu.China now feeds around 20 percent of the world's population with less than 9 percent of the world's arable (可耕種的)land.
   At present,Yuan's team has nine third-generation hybrid rice combinations under trial,which are expected to achieve commercial seed production in the following three to four years and hope to apply the technology into the research of sea rice.The third-generation hybrid rice has the comprehensive strength to promote a greener and more sustainable development of China's rice production with higher quality and yield.

(1)What feature of the new hybrid rice does Qian Qian mainly talk about?
D
D

A.It saves a lot more water.
B.It achieves a higher yield.
C.It saves much more farmland.
D.It has a shorter growing period.
(2)Why is the new hybrid rice not tested in ideal areas?
C
C

A.The ordinary farmers master planting technology.
B.The researchers want to reduce the experiment cost.
C.The growing conditions the new hybrid rice needs are simple.
D.The previous rice farming provides researchers with experience.
(3)What is the fourth paragraph mainly about?
A
A

A.The high output of the third-generation hybrid rice.
B.The future of the new hybrid rice variety.
C.The advanced technology of the research on hybrid rice.
D.The differences between the three hybrid rice varieties.
(4)Where is this text most likely from?
B
B

A.A guide book.
B.A news report.
C.An advertisement.
D.A fashion magazine.

【考點(diǎn)】新聞報(bào)道;新聞報(bào)道
【答案】D;C;A;B
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/12/19 9:0:1組卷:9引用:1難度:0.5
相似題
  • 1.Technology is forever changing the way we get our news.Most people now get a lot of their news on electronic devices,instead of traditional media,such as newspapers,television or radio.An increasing number of people also report turning to social media for information.
       Now,there is a new technology that could greatly change the way we get the news:computer-created news readers.China has launched what it called the world's first artificial intelligence,or AI news presenters.
       The news readers,supported by machine learning technology,are based on two real-life Chinese newsmen.One is able to present news broadcast in English;the other,in Mandarin Chinese.A report said machine learning was used to examine video images and sounds of the two newsmen.Similar technology has been used to create video products known as "deepfake videos".A deepfake video is a video that looks real,but was electronically changed.Such videos can make people appear to say things they never said.
       It's said that the AI presenters will be a great improvement to the news team because they "can work 24 hours a day" on its website and on social media.One of the presenters even promised to "work tirelessly" to keep people informed.Some machine learning experts said the system showed off China's latest progress in voice recognition,text-to-speech technology and data analysis.
       Others wondered about the effects robots might have on employment and workers.Some people argued that only low-level jobs requiring heavy labour will be easily replaced by robots.Others praised the technology as a way for companies to make money from low-cost labour machines.
       Anyway,for its great potential,some businesses have experimented with similar technology for possible use in news operations.

    (1)People now get information mainly from
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    B.traditional media
    C.social media
    D.AI news presenters
    (2)The author mentioned "deepfake" in Paragraph 3 because
    .
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    B.it was also developed by China
    C.it also used machine learning technology
    D.it also gained popularity and recognition
    (3)What can we know about AI news presenters?

    A.AI news presenters can only "speak" one language.
    B.Not all the people are in favour of AI news presenters.
    C.AI news presenters will soon replace human news readers.
    D.AI news presenters can reflect the improvement in robot making.
    (4)What will probably be discussed in the following paragraph?

    A.Further research on the technology.
    B.Other advantages of the technology.
    C.Principles the technology is based on.
    D.Examples the technology is applied to.

    發(fā)布:2024/12/18 13:30:2組卷:46引用:2難度:0.5
  • 2.The TV series,The Longest Day in Chang 'an,which was shown on Chinese online platforms last summer became a hit soon.Since then,it has been shown on partnering streaming platforms and TV networks abroad.Some websites overseas also offered the program to their users paying for it—the first time a Chinese series was broadcast as paid content abroad.
       "I was amazed by the overseas audience's love for this show," Cao Dun,director of The Longest Day in Chang'an,told Beijing Review. "I was worried that they wouldn't understand the complex political structure of the Tang Dynasty.But in reality,the show is prompting foreign audiences to research Tang Dynasty's history to better understand the plot."
       The unique culture in ancient China is not a barrier but a bridge to connect with foreign audiences.In the TV series,every figure is given enough space to flesh out his or her character.Telling stories of ordinary Chinese people that resonate(引起共鳴)with the audience might be the way to communicate with the world. "The success of the TV series shows that beauty is a universal language crossing borders," he told Beijing Review.
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    (1)What do we know about the TV series?

    A.It was first put on overseas.
    B.It can be appreciated for free.
    C.It was very popular once it was shown.
    D.It is about the development of the Tang Dynasty.
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    A.Requiring.
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    A.Recognition of beauty.
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    (4)What is Cao Dun's ambition?

    A.To make a successful TV series.
    B.To tell Chinese stories to the world.
    C.To show China's different nationalities.
    D.To learn the ancient political structure.

    發(fā)布:2024/12/11 16:30:7組卷:75引用:2難度:0.3
  • 3.Parts of Africa are covered by a dark cloud.But this is no rain cloud.It is a living cloud made of billions of locusts (蝗蟲(chóng)) that are travelling across the continent eating everything in their path.
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    (1)By using "dark cloud" to describe locusts in the first paragraph,the author of the article
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    A.shows the size and speed of the mass of locusts
    B.suggests the great damage that locusts can cause
    C.warns that locusts would sweep the continent like rain clouds
    D.both A and B
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    .
    A.West Africa's united effort in fighting a disaster
    B.the difficulty in controlling locusts
    C.how locusts caused great damage to West Africa
    D.a(chǎn) struggle to fight against a disaster brought by locusts in West Africa
    (3)The locust disaster
    .
    A.would be even more serious in Asia
    B.is out of control
    C.a(chǎn)ffected only the warning areas
    D.cannot be stopped unless twice as much pesticide is provided for the affected areas
    (4)Which of the following is WRONG?

    A.Sud-Fm offers a reward for fighting locusts so that more people will join in the effort.
    B.Senegal is to the southwest of Sudan.
    C.The locusts can cause such damage mainly because it has no natural enemy in West Africa.
    D.12 countries affected by locusts have united but still lack pesticide.

    發(fā)布:2024/12/11 1:0:1組卷:38引用:3難度:0.5
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