2021届中山市中山市东区中学高三英语上学期期中考试试题及参考答案.pdf
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1、2021 届中山市中山市东区中学高三英语上学期期中考试试题及参考答案 第一部分 阅读(共两节,满分 40 分)第一节(共 15 小题;每小题 2 分,满分 30 分)阅读下列短文,从每题所给的 A、B、C、D 四个选项中选出最佳选项 A A Lifelong Devotion to Keeping People Fed Yuan Longping is a Chinese agricultural scientist and educator,known for developing the hybrid rice varieties.Yuan graduated from the South
2、west Agriculture Institute in 1953 andbegan his teaching career at an agriculture school.In the 1960s,when a serious food shortage sweptChina,Yuan decided to devote himself to studying how to increase the yields of rice.He then began a lifelong connection with rice.Yuan succeeded in growing the worl
3、ds first high-yielding hybrid rice varieties in 1973,which could reach a yield of over 500 kg per mu(about 0.067 hectares),rising from the previous yield of only 300 kg per mu.For the next four decades,he continued to work on research and development of hybrid rice,achieving increasingly higher outp
4、uts.In 2020,hybrid rice developed by Yuans team achieved 1,500 kilograms per mu in two growing seasons,a new world record.InChina,where rice is the main food for the majority of the 1.4 billion people,the planting area of hybrid rice has reached 16 million hectares,or 57%of the total planting area o
5、f rice,helping feed an extra 80 million people a year.Hybrid rice has also been grown in over 40 countries,including theU.S.,Brazil,India,Vietnam,thePhilippinesandMadagascar.The total planting area of the hybrid rice has reached 8 million hectares overseas.Even after a great success,Yuan never held
6、himself back from making new breakthroughs.In 2017,his team started to grow seawater rice inQingdao.The rice was designed to grow in saline-alkaline land and survive even after being completely in seawater.His team planned to develop a type of seawater rice that could be planted in 6.67 million hect
7、ares of saline-alkaline land acrossChinato boost the countrys rice harvest by about 20%.In 2018,Yuans team was invited to plant the saline-alkaline tolerant rice in experimental fields inDubai,which achieved huge success.In June 2020,his team started to grow seawater rice on a farm at an altitude of
8、 2,800 meters in northwestChinasQinghaiProvince.The experiment succeeded.Yuan had two dreams to“enjoy the cool under the rice crops taller than men”and that hybrid rice could be grown all over the world to help solve the global food shortage.1.What made Yuan Longping decide to study rice?A.A serious
9、 food shortage.B.Agriculture development.C.His interest in the rice experiment.D.His wish to plant the tallest rice in the world.2.From the passage,we know that Yuan Longping _.A.developed a variety of hybrid rice B.worked as a scientist after graduation C.started to grow seawater rice inDubaiin 201
10、7 D.grew the first high-yielding hybrid rice varieties in 1953 3.We can infer from the passage that Yuan Longpings most outstanding qualities are_.A.modest and outgoing B.honest and creative C.generous and optimistic D.responsible and devoted B As summer approaches,many kids and teenagers may find t
11、hat they have more time in hand.One great way to make use of the extra time is to go on an adventure and travel.Clearly,I am not a naturally adventurous person,but I have found that takingthe risk and challenging myself to explore and travel to unfamiliar places can be a very rewarding experience.Be
12、cause I am usually quite busy during the school year,most of my travels take place during the summer.Over the past few summers,I have hiked in the Grand Canyon,explored Niagara Falls,and camped out in upstate New York.Although these experiences are varied,they are similar in that they instill(灌输)a s
13、ense of appreciation for nature and a more balanced view on life.When I hiked in the Grand Canyon,for example,I was in awe(敬畏)of the geological influences that shaped the canyon.Adventures,of course,are not limited to hiking.There are many other choices,such as camping,volunteering in a foreign envi
14、ronment and travelling to different countries.In my opinion,adventures are more enjoyable with family or a few friends.There is a sense of bonding that one only gets through spending time together in outdoor adventures.For example,when I was in Boy Scouts,I often went on weekend camping trips with m
15、y friends.When I came back from a Boy Scouts camping trip,I often was eager to go outside more and explore the parks and nature around me.Next fall,I will attend college.In the meantime though,I hope to make the most of my summer to explore and travel.Now,I am planning on hiking and camping out in M
16、aine.When I visited Maine last fall,I was amazed by how beautiful it was and the tall trees and coasts that exist,and I really hope to enjoy the beauty of nature there this summer.4.We can learn from the first paragraph about the author?A.He is an adventurous person by nature B.He likes challenging
17、himself by travelling C.He enjoys travelling with other adventurers D He needs others help when going on an adventure 5.Which of the following can make peoples adventure more enjoyable according to the author?A.Going to different countries.B.Going to unfamiliar places.C.Travelling withtheir family o
18、r friends.D.Travelling to distant places by themselves.6.What will the author do this summer?A.Explore Niagara Falls.B.Hike in the Grand Canyons.C.Camp out in upstate New York.D.Hike and camp out in Maine.7.Who is probably the author?A.A high school student.B.A college student.C.A friendly guide.D.A
19、 warm-hearted teacher.C Japan is known to have higher than average rates of stomach cancer.Recently,the town of Kaneyama in Yamagata Prefecture decided to get its 6,000 residents(居民)tested.However,the frozen urine samples(尿样)are not tested in conventional ways.Instead,Professor Masao Miyashita and h
20、is team are using them in a trial to determine if specially trained cancer-sniffing dogs can accurately detect the disease.Though the study is still in its early stages,Miyashita is thrilled with the results.He said,“In our research so far,cancer detection dogs have been able to find signs of cancer
21、 with an accuracy of nearly 100 percent.”Researchers have known about the animals superior sensory skills for decades.However,their ability to detect cancer in humans came to light in 1989,after a dog sniffed out early-stage malignant melanoma(恶性黑色素瘤)on a patients leg in London.Since then,scientists
22、 from many countries have conducted studies to test dogs great skill at identifying cancer chemicals.While most dogs can be trained for the task researchers say the best candidates are dogs that are precise,quiet,and perhaps even a little shy.The training process is similar to how dogs are taught to
23、 learn any trick by rewarding them with treats!However,it takes much longer because the dogs have to learn to separate the“cancer scent(气味)”from the thousands of organic compounds(有机化合物)in the human body.Researchers begin by exposing the dogs to urine samples from people with cancer,people with othe
24、r diseases,and patients with no health issues,Once the dogs are able to accurately identify cancer,they are further trained to detect particular kinds of cancer.Successful as they may be,experts think dogs are unlikely to replace conventional tests.For one,it takes about seven years and costs as muc
25、h as$45,000 to train a single dog.Klaus Hackner,a researcher and physician who studies dogs detecting cancer in breath samples at Krems University Hospital in Austria,is also not convinced dogs can be relied upon alone.Patients,therefore,have to receive further tests to confirm if they have the dise
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