高考英语一轮复习单元达标能力测试二十二Unit 22 Environmental Protect文档格式.docx

1、用2B铅笔将答题卡上试卷类型A后的方框涂黑。2.选择题的作答：每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑，写在试题卷、草稿纸和答题卡上的非答题区域均无效。3.非选择题的作答：用签字笔直接答在答题卡上对应的答题区域内。写在试题卷、草稿纸和答题卡上的非答题区域均无效。4.考试结束后，请将本试题卷和答题卡一并上交。第卷第一部分 听力（共两节，满分 30 分）（略） 第二部分 阅读理解（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，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。AIn a study published

2、in the U.S. journal Science，researchers from the Chinese Academy of Agricultural Sciences（CAAS） and the University of Florida identified the chemical combinations and genetic recipe for better tomato flavor（味道）.“In recent years，consumers often complain that the modern tomato is less flavorful than i

3、t once was，” said co-principal researcher Sanwen Huang.“Our results provide a practical road map for breeding tomato varieties with better flavor.”For the study，a 170-person consumer group was created to evaluate 160 tomatoes representing 101 varieties，based on qualities such as “overall liking” and

4、 “flavor degree”. The results pointed to dozens of chemical compounds of interest，and further research using a statistical model discovered 33 flavor compounds connected with consumer liking，such as glucose（葡萄糖）.The reason why modern tomatoes dont taste good anymore is that a total of 13 of these fl

5、avor-associated compounds “were significantly reduced in modern varieties”，their paper wrote. Moreover，the researchers found that smaller fruit tended to have greater sugar content，suggesting that “selection for more sizable tomatoes has cost sweetness and flavor”.Based on this knowledge，Huang and P

6、rofessor Harry Klee of the University of Florida studied the whole genomes of 398 varieties of tomato，identifying about 250 positions of genes on a chromosome（染色体），which controlled tomato flavor.“Were just fixing what has been damaged over the last half century to push them back to where they were a

7、 century ago，” said Klee in a statement.“We can make the supermarket tomato taste noticeably better.” Klee said new tomato varieties with better flavor could be ready in three to four years. In addition，“the genes and pathways identified here in the tomato almost certainly point to pathways worth re

8、searching for improvement of flavor quality in other fruit crops，” they wrote.1.According to the text，the study .A. was carried out just through a surveyB. was conducted by Chinese researchers themselvesC. was completely focused on the genes of different tomatoesD. was done with the background of de

9、clining flavor of tomatoes2.The researchers have found that in the study.A. bigger tomatoes are much sweeterB. some genetic positions affect the taste of tomatoesC. some chemical compounds make tomatoes less tastyD. a total of 13 flavor-associated compounds make tomatoes appealing in taste3.What is

10、the influence of the study according to the text?A. The study lays the foundation for further researches to improve other fruit crops flavor.B. The study makes it possible for us to have noticeably more tasty tomatoes next year.C. The study provides a road for where to plant tomatoes with better fla

11、vor.D. The study has fixed all the genes of existing tomatoes.【语篇解读】 文章介绍了美国科学杂志发表的关于西红柿味道的研究，这项研究是由中国农业科学院和美国佛罗里达大学完成的。1. 解析：选D细节理解题。根据第二段的内容可知，此研究的背景是现代西红柿味道下降。2. 解析：选B 细节理解题。根据倒数第二段中的“.identifying about 250 positions of genes on a chromosome（染色体），which controlled tomato flavor.”可知，一些染色体上基因的位置控制西红

12、柿的味道。3. 解析： 选A 推理判断题。根据最后一段最后一句中的“.the genes and pathways identified here in the tomato almost certainly point to pathways worth researching for improvement of flavor quality in other fruit crops.”可知，此研究为进一步研究改进其他水果作物的口味奠定了基础。BIt was a winter day; the falling snow blocked out the sun. The wind chall

13、enged the car and joined other forces of winter slippery roads and poor visibility to almost take our little car off course.“Do you feel safe? Should I turn back？”“No，” my wife Jennifer replied “I really want to see this show in Toronto. I have faith in your driving.”We were coming down the hill on

14、the highway. Suddenly there was a noticeable increase in the force of snow. I felt the car stagger （摇晃） slightly to the left and then to the right. We were in the farleft lane; the bus was in the middle. Our little Neon slid into the side of the bus at about midpoint. Suddenly Jennifer was cheektoch

15、eek with the side of the bus. She screamed in horror. Bouncing （反弹） off the bus, our car then hit onto the barrier in the middle of the highway. Then from the barrier we rebounded back to the side of the bus. Jennifer screamed and then we were back to the barrier again.Finally, the bus moved far enough ahead and we just caught the rear bumper （保险杠）, which caused the car to spin 180 degrees so we were now facing oncoming traffic. There was nothing I could do but wait to be knocked down. Jennifer whispered，“I guess this is how it fee