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1、黑龙江省双鸭山市2017高考英语一轮复习阅读理解选编1黑龙江双鸭山市2017高考英语一轮阅读理解选编阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。US researchers have found traces of an ancient lake on Mars recently，increasing hopes of discovering evidence that billions of years ago the Red planet hosted life.The lake，which dates back some 3.4 billion ye
2、ars，appears to have covered as much as 80 square miles and was up to 1,500 feet deep，said the team from the University of Colorado.“This is the first clear evidence of shorelines on the surface of Mars，”said Boulder s research associate，Gaetano Di Achille，in a study published in the latest edition o
3、f Geophysical Rese arch Letters.“The identification of the shorelines and accompanying geological evidence allows us to calculate the size and volume of the lake，which appears to have formed about 3.4 billion years ago.”Analysis of the images has shown the water carved out the canyon(溪谷)in which it
4、was found，which then opened out into a valley depositing(使淤积)sediment(沉积)which formed a delta(三角洲)“Finding shorelines is a great discovery to us，”said assistant professor Brian Hynek，adding it showed the lake existed at a time when Mars was thought to have been cold and dry.Scientists believe the ol
5、dest surfaces on Mars formed during the wet and warm era known as the Noachan epoch，about 4.1 billion to 3.7 billion years ago.The newly discovered lake is believed to date from the Hesperian era and postdates the end of the warm and wet period on Mars by 300 million years，according to the study.Sci
6、entists believe deltas next to the lake may well hold secrets about past life on Mars as such places on Earth have become the natural deposits of organic carbon and other markers of life.1. The size of the lake found on Mars is_.A80 square milesB1,500 square milesC3.4 billion square milesD300 millio
7、n square miles答案：A细节理解题。根据第二段中“The lake，which dates back some 3.4 billion years，appears to have covered as much as 80 square miles”一句，可推知答案。2. When the lake existed，the weather on Mars was _.Ahot and wet Bwet and warmCcold and dry Dcold and wet答案：C细节理解题。根据第六段中it showed the lake existed at a time whe
8、n Mars was thought to have been cold and dry知，答案为C。3. Why do scientists think deltas near the lake may hold secrets about past life on Mars?A. Because similar places on Earth have become natural deposits of markers of life.BBecause someone has put secrets about past life on Mars there.CBecause past
9、life has been found in other deltas on Mars.DBecause some people are said to have already seen life marks there.答案：A 细节理解题。由原文最后一句可直接找到答案。4. Which of the following statements is NOT true according to the passage? AThe Noachan epoch was a wet and warm era.BThe lake might have existed 3 .4 billion yea
10、rs.CThe discovery can t fully prove that the Mars once hosted life.DThe lake traces prove that there exists life on Mars now.答案：D 推理判断题。由第一段内容可知火星上湖岸线的发现只是增加了人们发现亿万年前火星上曾经存在生命证据的可能性，但并不能推出火星上现在有生命。黑龙江省大庆市喇中2016高考英语阅读练习科普环保类Many gardeners believe that “talking” to their plants helps them grow-it turn
11、s out that they may not be crazy after all. According to the scientists from the University of Exeter, plants may keep communicating with each other through a secret “unseen” language. For their experiment, the scientists picked a cabbage plant that is known to send out a gas when its surface is cut
12、. In order to get video evidence of the communication, they changed the cabbage gene by adding the protein-luciderase(虫荧光素酶), which is what makes fireflies(萤火虫) glow in the dark. When the changed cabbage plant was in full bloom, they cut a leaf off with a pair of scissors, and almost immediately, th
13、anks to the luciderase, they could see the plant sending out “methyl jasmonate(茉莉酸甲酯)”. While this was a known fact, what was surprising was the fact that the minute this gas began to give out, the nearby cabbage plants seemed to sense some kind of danger and started to send out a gas that they norm
14、ally have to keep predators(捕食者) like caterpillars(毛虫) away. What the scientists are not sure is whether the plants are trying to warn the other leaves or the near plants about the danger-something that will require further research However, the team, which is led by Professor Nick Smirnoff, is quit
15、e excited about the findings because this is the first time it has been proved that plants do not live a passive life, but actually move, sense and even communicate with each other. However, before you get all concerned, they are quite sure that plants do not feel the pain when they are cut, since t
16、hey do not have nerves-so go ahead and bite into that juicy carrot!【小题1】Whats the best title of the passage? A Plants Can Send Some GasB Plants Can Communicate with Each OtherC The “Unseen” Language of PlantsD Plants Cant Feel Pain【小题2】What does the underlined word “they” in Paragraph 1 mean? A GardenersB PlantsC ScientistsD
