Up until now，it has been believed big cats like the leopard（豹）originated in parts of Africa.However，an ancient skull unearthed recently indicates that big cats originated in central.
Dated at between 4.1 and 5.95 million years old，the fossil is the oldest remains ever found of a pantherine felid，as big cats are called.The previous felid record holder — tooth fragments（碎片）found in Tanzania — is estimated to be around 3.8 million years old.
The evolution of big cats has been hotly discussed，and the issue is complicated by a lack of fossil evidence to settle the debate.
"This find suggests that big cats have a deeper evolutionary origin than previously suspected." said Jack Zeng，a paleontologist of the University of Southern California who led the probe（調(diào)查）.
Zeng and his team made the find in 2010 in a remote border region in Tibet.The fossil was found stuck among more than 100 bones that were probably deposited by a river that exited a cliff.After three years of careful comparisons with other fossils，using DNA data to build a family tree，the team is convinced the creature was a pantherine felid.
The weight of evidence suggests that central or northern Asia where big cats originated some 16 million years ago.They may have lived in a vast mountain shelter，formed by the uplifting Himalayas，feeding on equally remarkable species such as the Tibetan blue sheep.They then dispersed（分散）into Southeast Asia，evolving into the clouded leopard，tiger and snow leopard families，and later movements across continents saw them evolve into jaguars and lions.
The newly discovered felid has been called Panthera Blytheae，after Blythe Haaga，daughter of a couple who support a museum in Los Angeles，the university said in a news release.
（1）According to the passage，why is the origin of big cats a hot issue？ AA
A．Because not many fossils have been found.
B．Because they moved across continents.
C．Because no equipment was available for accurate analysis.
D．Because they have evolved into many different species of felid.
（2）Where was the felid fossil found？ BB
A．In Tanzania.
B．In Tibet.
C．In California.
D．In Southeast Asia.
（3）According to the passage，which of the following statements is true？ DD
A．Some big cats evolved into jaguars 16 million years ago.
B．The oldest fossil of big cats ever discovered is 3.8 million years old.
C．Big cats are later generations of snow leopards living in high mountains.
D．Tibetan blue sheep was a main food source for big cats in the Himalayas.
（4）What is the purpose of this passage？ BB
A．To promote wildlife conservation.
B．To report on a new find in paleontology.
C．To introduce a new animal species.
D．To compare the family trees of pantherine felids.
【答案】A；B；D；B
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：0引用：1難度：0.5
相似題
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1．China has announced that couples will be permitted to have up to three children in a major policy shift from the existing two-child limit，after recent data showed a dramatic decline in births in the world's most populated country.
"To actively respond to the ageing of the population…a couple can have three children，" state media Xinhua reported on Monday，citing a committee meeting hosted by President Xi Jinping．
Early this May，China reported the slowest population growth since the early 1960s，despite scrapping its one-child policy in 2015 to encourage more births and avoid a potential population crisis.
A once-a-decade survey showed that the overall population of China grew to 1，41178 billion in the 10 years to 2020，up by 5.38%.The increase reflects an average annual rise of 0.53%，down from 0.57% reported from 2000 to 2010.
The announcement drew a chilly response on Chinese social media，where many people said they could not afford to have even one or two children. "I am willing to have three children if you give me 5 million yuan（￡554，350），" one user posted on Weibo.As a matter of fact，experiment of the three-child policy in Heilongjiang province in the last few years also resulted less effectively than expected.
It is not only China that is facing such a population challenge.Across east Asia，authorities have，for years，been struggling to persuade couples to have more babies.South Korea and Japan both have used allowance to encourage.
The policy change will come with "supportive measures，which will be beneficial to improving our country's population structure，fulfilling the country's strategy of actively coping with an ageing population and maintaining the advantage of human resources"，Xinhua said.It did not specify the support measures.
（1）Why did China announce the three-child limit this May？
A．To completely stop the population from ageing
B．To show concern over the ageing population.
C．To increase the birth rate of the country
D．To remove the two-child limit
（2）What's the meaning of the underlined word scrapping in para 3？
A．Issuing .
B．Changing.
C．Adopting.
D．Canceling.
（3）What can we infer from para 4 to para 6？
A．China has a smaller population in 2020 than in 2010.
B．Many couples can't afford to raise two or more children.
C．Hei Longjiang has the smallest population among the provinces.
D．Korea and Japan have managed to cope with ageing population.
（4）Where is this text most probably from？
A．A book review.
B．An online newspaper.
C．A travel brochure.
D．A biology textbook.發(fā)布：2025/1/1 14:0:1組卷：1引用：2難度：0.5 -
2．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(zèng)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 -
3．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
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