2019-2020学年西安市第八十三中学高三英语一模试题及答案解析第一部分阅读（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AMy wife Hilary andI were on the beach, with three of our children, taking pictures of shore birds near our home in Alaska when we saw a bear. The bear was thin and small, moving aimlessly.Just a few minutes later, I heard my daughter shouting, “Dad! The bear is right behind us!" An aggressive bear will usually rush forward to frighten away its enemy but would suddenly stop at the last minute. This one was silent and its ears pinned back the sign of an animal that is going in for the kill. And it was a cold April day. Thebear behaved abnormally, probably because of hunger.I held my camera tripod(三脚架)in both hands to form a barrier as the bear rushed into me. Its huge head was level with my chest and shoulders, and the tripod stuck across its mouth. It bit down and I found myself supporting its weight. I knew 1 would not be able to hold it for long.Even so, this was a fight I had to win: I was all that stood between the bear and my family, who would stand little chance of running faster than a brown bear.The bear hit at the camera, cutting it off the tripod. I raised my left arm to protect my face; the beast held tightly on the tripod and pressed it into my side. My arm could not move, and I sensed that my bones were going to break.Drawing back my free hand, I struck the bear as hard as I could for five to six times. The bear opened its mouth and I grasped its fur, trying to push it away. I was actually wrestling with the bear at this point. Then, as suddenly as it had begun, the fight ended. The bear moved back towards-the forest,before returning for another attack the first time I felt panic.Obviously satisfied that we caused no further threat, the bear moved off, destroying a fence as it went. My arm was injured, but the outcome for us could hardly have been better. I'm proud that my family remained clear-headed when panic could have led to a very different outcome.1. How did the writer feel when faced with the brown bear?A. Fearful but confident.B. Nervous but brave.C. Upset but determined.D. Awful but hopeful.2. The bear finally went away after itA. got injuredB. felt safeC. found some foodD. took away the camera3. What does the author want to tell us?A. We should keep calm when troubles comeB. We should rise to the challenge when faced with difficulties.C. We should not risk ourselves in some dangerous areas.D. We should learn to take advantage of anything at hand when in trouble.BWhen I was a kid, my mom set aside some breakfast food for supper every nowand then. I remember one night after a long, hard day at work, my mom placed a plate of eggs, sausage, and a plate of extremely burnt biscuits on the table. I waited to see if my dad would get annoyed.All my dad did was to reach for the biscuits, smile at my mom and ask me how my day at school had been. I don't remember what I told him that night but I do remember watching him add butter and jelly on that ugly burnt biscuit and ate every bite of that thing. He never made a face nor uttered a word about it!When I rose from the table that evening, I remember hearing my mom apologize to my dad for overcooking the biscuits and I will never forget what he said, “Honey, I love burnt biscuits every now and then."Later that night, I went to say good night to my daddy, and I wondered if he really liked his biscuits burnt. He wrapped me up in his arms and said gently, "Your mom put in a hard day at work today and she is really tired. Besides, a little burnt biscuit never hurt anyone!As I have grown older, I've thought about that many times. Life is full of imperfect things and imperfect people. Learning to accept each other's faults and choosing to celebrate each other's differences contribute to a healthy, growing, and lasting relationship. We could extend this philosophy to any relationship, such as a husband-wife, parent-child, or friendship. Don't put the key to your happiness in someone else's pocket. Keep it in your own. So, please pass me a biscuit, and yes, the burnt one will do just fine.4. How did the author's dad react to the burnt biscuit?A. He set it aside for breakfast.B. He ate butter and jelly instead.C. He uttered his complaints loudly.D. He ate it up as if nothing happened.5. Which of the following words can best describe the author's dad?A. Caring.B. Determined.C. ProudD. Hardworking.6. What does the author suggest people do in the last paragraph?A. Show understanding to imperfect things.B. Ask the children to respect their parents.C. Enjoy the over-cooked biscuits willingly.D. Make important decisions on your own.7. In which section of a magazine may this passage appear?A. History and culture.B. Family and relationship.C. Cuisine and health.D. Entertainment and sports.CA former UPS driver and his wife have made history by donating $20 million to Morgan State University – the largest gift any historically black college or university (HBCU) has ever received from a former student. The money, pledged by Calvin Tyler Jr and his wife Tina, will fund scholarships that were established under the Tylers’ name in 2002.Tyler grew up in a low-income family and was forced to drop out of Morgan State University in 1963 because he could no longer afford to study. The following year, Tyler saw a job advertisement in a Baltimore newspaper from United Parcel Service and got a job with the company as a driver. He rose through the ranks during his 34-year career at the global shipping company to become its senior vice president of US operations and a member of the board of directors before retiring in 1998.Tyler and his wife, also a Baltimore native, have lived all across the country but he said they have never forgotten their humble beginnings.Their latest pledge follows a $5million commitment they made in 2016 for the fund, which to date has supported 222 students with full or partial scholarships.Marybeth Gasman, a professor at Rutgers University who studies HBCUs, said the gift is significant because public HBCU’s like Morgan State University tend to have a lower alumni giving rate compared to private ones.“For a long time, they weren’t asking alumni to give,” she said. But that has changed in the past couple of decades, she added, and the schools have “started asking alumni to give and creating a culture of philanthropy (慈善) on campus.”David K. Wilson, the president of Morgan State University, said the money will help students for years to come. “Morgan is so proud to call this son and daughter of the great city of Baltimore our own,” he said in astatement. “Through their historic giving, the doors of higher education will most certainly be kept open for generations of aspiring leaders whose financial shortfalls may have kept them from realizing their academic dreams.”“We are forever indebted to the Tylers”.8. Why is Tyler’s donation historic?A. He was a former UPS driver.B. The donation is large enough.C. The donation will fund his scholarships.D. He used to be a student at the university.9. What is a driving force of Tyler’s donation?A. His working experiences.B. His career achievements.C. His promise to the university.D. His past embarrassing situations.10. Which is true about HBCUs according to Gasman?A. They are mainly public universities.B. They are encouraging alumni to donate.C. They rarely accept help from the alumni.D. They have changed little over the decades.11. What can be inferred about Tyler from Wilson’s comments?A. He’s helped many city leaders.B. He’s grateful to his university.C. He’s made great contributions.D. He’s proud of his son and daughter.DLight pollution is a significant but overlooked driver of the rapid decline of insect populations, according to the most comprehensive review of the scientific evidence to date.Artificial light at night can affect every aspect of insects' lives, the researchers said. "We strongly believe artificial light at night — in combination with habitat loss, chemical pollution.invasive (入侵的) species, and climate change — is driving insect declines, " the scientists concluded after assessing more than 150 studies.Insect population collapses have been reported around the world, and the first global scientific review published in February,said widespread declines threatened to cause a "catastrophic collapse of nature's ecosystems".There are thought to be millions of insect species, most still unknown to science, and about half are active atnight. Those active in the day may also be disturbed by light at night when they are at rest.The most familiar impact of light pollution is moths (飞蛾) flapping around a bulb, mistaking it for the moon. Some insects use the polarisation of light to find the water they need to breed, as light waves line up after reflecting from a smooth surface. But artificial light can scupper (使泡汤) this. Insects areimportant prey (猎物) for many species, but light pollution can tip the balance in favour of the predator if it traps insects around lights. Such increases in predation risk were likely to cause the rapid extinction of affected species, the researchers said.The researchers said most human-caused threats to insects have analogues in nature, such as climate change and invasive species. But light pollution is particularly hard for insects to deal with.However, unlike other drivers of decline, light pollution is ly easy to prevent. Simply turning off lights that are not needed is the most obvious action, he said, while making lights motion-activated also cuts light pollution. Shading lights so only the area needed is lit up is important. It is the same with avoiding blue-white lights, which interfere with daily rhythms. LED lights also offer hope as they can be easily tuned to avoid harmful colours and flicker rates.12. What is discussed in the passage?A. Causes of declining insect populations.B. Consequences of insect population collapses.C. Light pollution: the key bringer of insect declines.D. Insect declines: the driver of the collapsed ecosystem.13. What is the 5th paragraph mainly about?A. How light travels in space.B. How light helps insects find food.C. How the food chain is interrelated.D. How light pollution affects insects.14. What does the underlined word"analogues"in Paragraph 6probably mean?A. Selective things.B. Similar things.C. Variations.D. Limitations.15. What is the purpose of the last paragraph?A. To offer solutions.B. To give examples.C. To make comparisons.D. To present arguments.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
