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？ DD
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？ CC
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？ AA
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？ BB
A．A guide book.
B．A news report.
C．An advertisement.
D．A fashion magazine.
【答案】D；C；A；B
【解答】
【點評】
聲明：本試題解析著作權屬菁優(yōu)網(wǎng)所有，未經(jīng)書面同意，不得復制發(fā)布。
發(fā)布：2024/12/19 9:0:1組卷：9引用：1難度：0.5
相似題
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1．British children's writer Roald Dahl ate chocolates and sweets "pretty much every mealtime"，remembers daughter Ophelia Dahl．
After dinner，whether dining alone or entertaining guests，Dahl would pass around a little red plastic box full of Mars Bars，Milky Ways，Maltesers，Kit Kats and much more．
He knew the history of all the sweets and could tell you exactly when they were invented． =1937 was a big year when Kit Kats （his favorite），Rolos，and Smarties （his dog，chopper's favorite） were invented．He wrote a history of chocolate，lecturing schoolchildren to commit such dates to memory，such as 1928 when "Cadbury's Fruit and Nut Bar popped up on the scene"，saying don't bother with the Kings and Queens of England．All of you should learn these dates instead．Perhaps the Headmistress will see from now on that it becomes part of the major teaching in this school．
According to Dahl，the Golden Years of Chocolate were 1930-1937．In 1930，Roald Dahl was 14 years old．He was a student at Repton，a famous boys' boarding school in England．It was a tough environment：Those in authority were more interested in controlling than educating the students．
Ironically，it was at this difficult period that chocolate became Dahl's passion．Near Repton was a Cadbury chocolate factory．Every so often，Cadbury would send each schoolboy a sampler box of new chocolates to taste and grade．They were using the students - "the greatest chocolate bar experts in the world" to test out their new inventions．
This was when Dahl's imagination took flight．He pictured fiactories with inventing rooms with pots of chocolate and fudge （軟糖）and "all sorts of other delicious fillings bubbling away on the stoves"．
"It was lovely dreaming those dreams…when I was looking for a plot for my second book for children，I remembered those little cardboard boxes and the newly-invented chocolates inside them，and I began to write a book called Charlie and the Chocolate Factory．"
For the record，Roald Dahl did not like chocolate cake or chocolate ice cream．He said， "I prefer my chocolate straight．"
（1）What can we learn about Roald Dahl？
A．He treated himself with various chocolates after dinner secretly．
B．He has a good knowledge of chocolate，especially its history．
C．He used to lecture schoolchildren of a boys，boarding school．
D．He only wrote some books related to the history of chocolate．
（2）What happened during the Golden Years of Chocolate？
A．It was a great time for children to get educated．
B．Those years stopped Dahl's interest in chocolate．
C．Students could become chocolate experts then．
D．Roald Dahl's passion for chocolate was lit up then．
（3）Which of the following can best replace the underlined phrase？
A．paid off
B．went on
C．picked up
D．took off
（4）What gave Roald Dahl inspiration to write Charlie and the Chocolate Factory？
A．The dreams about chocolates．
B．Factories with chocolate and fudge．
C．Those boxes with chocolates．
D．Chocolate cakes and ice cream．發(fā)布：2025/1/30 8:0:1組卷：4引用：1難度：0.5 -
2．LANZHOU-When an international olive oil competition announced its winners in Greece in late June，excitement spread across the village of Daoqi in Northwest China.
"The award-winning olive oil was made from our fruit，" said Ru Ciming，50，an olive planter from the village under the city of Longnan，Gansu province.The variety of olive trees in Ru's orchard（果園）was introduced from Spajye.ai.In the eyes of locals，the foreign trees have not only pulled the city，once among the least-developed regions in China，out of poverty，but they have also brought them international fame.
Olives originated in the Mediterranean（地中海地區(qū)）and their oil，often called liquid gold，is used widely in food，cosmetics and medicjye.aie.In the 1960s，the Albanian government gifted China more than 10，000 olive saplings（樹苗），which were then planted in many parts of the country on nationwide trials.Longnan began to plant olive trees in the early 1970s and experts concluded that the region was ideal for the resettlement of the olive trees due to its climate and soil condition.After years of experiments and promotion，it is now the largest olive cultivation（栽培）base in China.
In recent years，the local olive oil industry has continued to expand as Longnan has improved cooperation with Mediterranean countries that have a long history of olive planting，including Italy，Greece and Spain.The improved cooperation aims to introduce better varieties and initiate technical exchanges.
Pedro J.Rodriguez Sanchez，a Spanish olive seedling expert，was one of the early contributors to olive exchanges.He arrived in Longnan in 2009，when only half of the local olive tree seedlings had survived.His technical guidance helped raise the survival rate to over 90 percent.
Zhao Haiyun，an official in charge of promoting the olive industry in Longnan's Wudu District，said that many more European experts have arrived since Sanchez.They have visited orchards to offer guidance to farmers，and helped companies improve their processing and storage procedures.
They have helped the district，as well as the city of Longnan，to jump on the bandwagon of China's rising demand for high-quality olive oil，especially among well-off urban families，said Zhao.
（1）What can we learn from the third paragraph？
A．Olive oil is named liquid gold and has many uses.
B．The Albanian government sold some olive saplings to China.
C．Longnan has a history of about 30 years of planting olive trees.
D．Longnan is fit for the growth of olive trees due to its rich water resources.
（2）Where did Pedro J.Rodriguez Sanchez come from？
A．Italy.
B．Albania.
C．Spain.
D．Greece.
（3）Which of the following words can replace the underlined one "bandwagon" in the last paragraph？
A．Policy.
B．Habit.
C．Fashion.
D．Model.
（4）What can be the best title for the news report？
A．Olives link Northwest China with world
B．Oliver trees pull Longnan out of poverty
C．Longnan is largest olive cultivation base in China
D．Longnan improves cooperation with Mediterranean countries發(fā)布：2025/1/1 16:0:1組卷：4引用：2難度：0.5 -
3．Hannah Levine decided she wanted to give hugs to all of the children and families in need at local hospitals.
Because she couldn't give them hugs one by one，Levine，then a sixth-grader，decided she would use her talents （才能） to do the next best thing.She began to knit （編織） hats，scarves，and blankets for families staying at the Ronald McDonald House at Stanford.Her creations also went to Bundle of Joy，a programme that provides newborn baby items for families in need，and to Knitting Pals by the Bay，a local organisation that provides hand-knitted caps to cancer patients.
"I love to knit，and I thought it would be a great idea to make all these handmade items for kids and adults who need them.It would be like a hug for them，" Levine explained.
Levine started the project about a year ago. "I think it's just really fun to do，and it keeps me busy，" said Levine，now 13.
Once she got started，Levine realised that her project could be much bigger than the goods she was able to produce with just her own hands.So she sent emails to her school and communities，asking for knitted donations （捐贈物） to the project，she named "Hannah's Warm Hugs".She also posted advertisements at Starbucks and other locations in her area.The warm goods began to pour in.
"It was amazing；more strangers than people she knew started dropping donations at our door，" said Levine's mother，Laura Levine. "We ended up with this huge box of items she was donating."
The knitted items numbered in the hundreds.Levine made her first round of donations around Hanukkah （an eight-day Jewish holiday in November or December） and later received thank-you letters from the organisations.Levine is still knitting，and she said the project will continue.
"It has turned into a bigger thing than she had thought，" her mum said. "It made her feel pretty good；it made us feel pretty good."
（1）Hannah Levine knitted hats，scarves and blankets.
A．to earn some pocket money
B．to raise money for cancer patients
C．for children and families in difficulty
D．for the homeless in her neighbourhood
（2）What can the underlined part "pour in" in Paragraph 5 best be replaced by？
A．Take off.
B．Go out.
C．Flood in.
D．Break in.
（3）What would be Laura Levine's attitude towards Hannah Levine's project？
A．Optimistic but worried.
B．Proud and supportive.
C．Worried but doubtful.
D．Unsatisfied and uncaring.
（4）What would be the best title for the text？
A．Be Ready to Lend a Helping Hand
B．Start a Project to Show Your Support
C．A 13-year-old Girl Becomes the Best Knitter
D．A Teen Turns Knitting Hobby into Heartwarming Project發(fā)布：2025/1/1 16:30:1組卷：10引用：3難度：0.5