江苏省南京市2020-2021学年高二上学期期中英语试题学校:___________姓名：___________班级：___________考号：___________一、阅读选择EReader IQDaily free e-books are the main feature on this site, and there are some fantastic titles to choose from, including a large number of children's books and young adult novels. The format is unique to Kindle though,so unless you have a conversion(转换)program, you might be out of luck if you're using a different e-reader.Ereader LoveThe majority of books on this site are in the science fiction and romance styles, but there are some jewels to be found in the other sections as well. Young adult readers may find some unique stories to dive into, and there are a few hundred mystery and horror novels to read through too.Project GutenbergThis site deals only with older books such as classic novels and reference materials, and are free in the United States because their copyright has been out of date.Gutenberg has over 42, 000 free e-books available, so any book lovers will have plenty of materials to refer to. Scribd. comA great site for self-published authors, Scribd gives people the opportunity to upload their own work, and download books by other authors. There's a small catch: not all the books are free.You can read free short pieces of some novels and then purchase with a little money, but there are many impressive titles available for no charge whatsoever.1．What can we learn from the passage?A．E-books on EReader IQ are free of charge.B．Up-to-date novels can be found in Project Gutenberg.C．Scribd. com is for famous writers to upload their work.D．Mystery and horror novels are in the majority on Ereader Love.2．On which website can you probably find The Time Machine by H.G. Wells? A．EReader IQB．Ereader LoveC．Project GutenbergD．3．What is the purpose of this passage?A．To stress the importance of e-reading.B．To compare the advantages of e-book websites.C．To introduce searching techniques for e-reading.D．To recommend some online resources of e-books.Suck in capital city traffic with no clear way to avoid the cars around is, an Oklahoma ambulance was at the mercy of is surrounding rush-hour drivers as I tried to make its way to a series of emergency calls on Saturday-one involving a young girl with cancer, who had traveled all the way from London for her treatment.That was until a certain 6-foot-9-inch do-gooder drove his car through the lanes and skillfully placed it so that the ambulance would be freed from the web of vehicles: Kevin Durant, a famous NBA player.“All of a sudden, I see a silver sports car making way for us to get through and guide all the Traffic,” Radford, a, doctor on the ambulance, said. “Once we actually get through all the traffic, this silver car comes over to the side and the driver waves to us.”According to Radford, Durant' s kindness led the doctors to make it to their second emergency call on time, too, enabling that young girl with cancer to get to her treatment safe and sound, For his part, Durant shied away from being regarded as a hero for his actions, saying what he did was entirely ordinary.“I just thought it was SO cool that someone like Durant would take the time to assist an ambulance getting to an emergency call,” Radford said. "Everything he did was amazing; Durant is the hometown hero.”For his heroism, Durant will be honored by the Oklahoma Emergency Medical Services Authority (OEMSA) as an “Everyday Hero”, an award that's given out four times a year.“Durant' s actions are exactly how we think citizens should help doctors reach their calls for emergencies. He is a great example of doing one's part to help those in need, and he handled it with such modesty,” an OEMSA representative said.4．Kevin was regarded as a hero mainly because .A．he answered emergency calls for doctorsB．he cured a young girl from London of cancerC．he guided an ambulance through rush-hour trafficD．he solved the problem of traffic jam in Oklahoma5．What do we know about Oklahoma from the passage?A．It is widely known for heavy traffic. B．It has poor emergency medical services. C．It has the best cancer experts in the world. D．It gives "Everyday Hero" award to citizens.6．Which words can best describe Durant?A．Warm-hearted and modest. B．Quick-minded and careful. C．Athletic and intelligent. D．Merciful and reliable.7．Which might be the best title for the passage?A．Better City, Faster Service B．Big Boy, Small KindnessC．Larger City, Heavier Traffic D．Ordinary Girl, Good Luck(Oct. 13th, 2020, Reuters) The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Chemistry 2020 to Emmanuelle Charpentier and Jennifer A．Doudna “for the development of a method for gene editing”.Charpentier and Doudna have discovered one of gene technology’s sharpest tools: the CRISPR/Cas9 genetic scissors. Using these, researchers can easily change the DNA of animals and plants. This technology has had a great impact on the life sciences. It is contributing to new cancer treatment and may make the dream of curing inherited diseases(遗传病)come true.Researchers need to modify genes in cells if they want to find out about life’s inner workings. This used to be difficult and sometimes impossible. Using the CRISPR/Cas9 genetic scissors, it is now possible to change the code of life in a few weeks.The discovery of these genetic scissors was unexpected. During Charpentier’s studies of Streptococcus pyogenes (酿脓链球菌),which cause the most harm to humans,she discovered a previously unknown molecule (分子), tracrRNA．It kills viruses by breaking their DNA．She started working with Doudna,an experienced biochemist in 2011. They then reprogrammed the genetic scissors. In their natural form, the scissors recognize DNA from viruses, but Charpentier and Doudna prove that they could be controlled so that they can cut any DNA molecule at a given site. Then it is easy to rewrite the code of life.Since Charpentier and Doudna discovered the CRISPR/Cas9 genetic scissors in 2012, their use has exploded. This tool has contributed to many important discoveries in basicresearch, and plant researchers have been able to develop crops that can fight pests and drought.Clinical trials(临床试验)of new cancer treatments are under way, and the dream of being able to cure inherited diseases is about to come true. These genetic scissors have taken the life sciences into a new page and, in many ways,are bringing the greatest benefit to humans. 8．In which field is CRISPR/Cas9 mostly used?A．Life science.B．Tool design.C．Disaster prevention.D．Chemistry industry.9．What does the underlined word “This” in Paragraph 3 refer to?A．Dealing with cancer.B．Modifying genes in cells.C．Curing inherited diseases.D．Discovering life’s inner workings.10．How does CRISPR/Cas9 work?A．It kills harmful viruses.B．It damages human organs.C．It makes DNA copying easier.D．It cuts DNA molecule at a chosen spot.11．The passage is aA．science fictionB．personal storyC．news reportD．book reviewMy grandma is the best pie maker in the world. So when she called me to say that one of her pies was missing, I knew that it was serious. I hurried to Grandma's house and suddenly realized that I hadn't visited her in a long time.“Start from the beginning,” I said. “I cut the pumpkin pie into six pieces,” she began. “A pumpkin pie! My favorite kind! This is even mo re serious than I thought.”I took out a small notebook and a pencil. “Now, when did you last see this pie?” “You mean the whole? I baked it this morning,” said Grandma. “Then the doorbell rang. It was theleaf collector.”“Just as I suspected,” I said, writing down “leaf collector”. “He stole the pie.” “Oh, no,” Grandma said. “He just wanted me to know that he was finished. I gave him a piece for his good job.” I put a line through "leaf collector"."Then what happened?"“When I went outside with his piece, the mail carrier was there. She told me she could smell that pie all the way. “Aha!” I wrote down “mail carrier”. “She stole the pie.”“No, I gave her a piece myself.” “Go on, please.” I said.“Then the phone rang, and it was my neighbor, Gloria Ketchum wi th the cats." I nodded and wrote "G.K.”. “She calls me every day to see if I need anything. So I invited her and her daughter over for some pie.”“Grandma! No one stole the pie. You gave away all the pieces. One to the leaf collector. Another to the mail c arrier. You and Gloria each had one. And her daughter's is five.”“Altogether six pieces!” Grandma said. “Maybe it was one of Gloria' s cats, or maybe a monster took it.” Grandma hid her face in her handkerchief; I couldn't tell if she was laughing or blowing her nose.I had to search for more clues.I opened the door of the refrigerator and asked “What's this?” Grandma looked surprised. “That's it!” She said, “I'll just warm it up. You must be hungry from the work, Jane!”I did find the pie. And it was delicious, just as I suspected.12．Who got a piece of pie for bringing Grandma's groceries?A．The leaf collector. B．The mail carrier. C．The neighbor. D．The author. 13．What is Grandma's real reason for calling the author?A．She found a piece of her pumpkin pie missing.B．Someone was needed to look into the strange case.C．The author did well in making the right judgement.D．She wanted to find a good excuse to meet the author.14．Why didn't the author open the fridge at first?A．Because she believed the pie was stolen. B．Because she didn't know where the pie was.C．Because she didn't want to ruin the game. D．Because she thought Grandma made a mistake.15．What does the passage mainly tell us?A．He who laughs last laughs best. B．You are the apple of my eye. C．Honesty is the best policy. D．Observation is the best teacher.二、七选五Since the DISEASE officially began in March,we've been told staying home is the best way to avoid catching Covid-19.But being homebound(居家隔离）for so long affects the body,weakening the heart and lungs and even damages the brain.16．This is what half a year of staying home can do to your body.A week homebound,whether you are working,eating or sleeping, seems to give you a sense of comfort. 17．That's because it can take months to build muscle and just one week to lose it. When you lose muscle, you're not necessarily losing shape, but you are losing strength. The stronger we stay, the easier it is for us to live longer.If you're not exercising,you're not raising your heart rate. And when your heart isn't pumping as hard, it gets weaker.18．Many patients have felt their breathing function become worse, because they're no longer conditioned to exercise.Exercise is the only key to improving both heart and lung function. If it's not safe to leave the house,doctors recommend dancing or finding household objects for home strength training.19．Exercise produces certain chemicals in the brain that break down toxins in the blood and even prevent them from going to the brain, where they can kill brain cells.The effects of homebound are hidden-like the DISEASE,the physical reactions after months of staying home often aren't obvious until they become harmful or extreme. Keeping your mental and physical health while staying home requires some work, but it's a better preparation for uncertainty until Covid-19 is over. 20．A．But actually, it can ruin hard-won fruit.B．Possibly, you can work out in the gym.C．This kind of lifestyle can slow your brain, too.D．The effects may stay with us beyond DISEASE' s end.E.And when it's safe to live fully again,you'll be prepared.F.The same thing happens to your lungs when you're inactive.G.Hopefully, the day will come when the DISEASE is swept away.三、完形填空阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项，并在答题纸上将该项涂黑。
