题目内容
7.For eight weeks last summer,scientists from several universities and government weather laboratories carried out the Severe Thunderstorm Electrification and Precipitation Study (STEPS).They set up a center in Goodland,Kansas,home to some of the heaviest thunderstorms(雷暴雨) in the United States.In this area,humid air from the Gulf of Mexico meets hot,dry air from the southwest,resulting in storms so huge that they can last for days as they move east across the country.The scientists working in Goodland were trying to learn as much as they could about these disordered storm systems.They already knew that the combination of strong winds,large amounts of moisture(潮湿),and big differences in temperatures could produce thunderheads,known as Super Cells.They also knew that super cells could produce terrible weather,including tornadoes(龙卷风).What the scientists did not know,however,was why some super cells produce heavy rain,lightning,and tornadoes,while others produce large hail(冰雹)that can destroy a wheat crop or a roof.The scientists supposed that the physical characteristics of storm clouds would give the reason for such differences.
To study the storm clouds,the researchers in Goodland met each morning and studied weather data(数据),hoping for bad weather.Their cars,equipped with weather instruments,were ready.Whenever a storm came near,some scientists drove toward the storm front and began collecting data on winds,temperature,air pressure,and humidity.During the storm,they also calculated the time and place of every lightning strike.
At the same time that the scientists on the ground were collecting their data,researchers in the air were operating a special radar station that would help them measure(计量) the shape and size of the water drops inside the clouds.These scientists rode in a single-engine plane specifically designed to fly through terrible weather systems.While the pilot guided the plane through heavy wind,lightning,hail,and ice,the scientists on board collected their storm data.
Researchers say that it will take years for them to understand all the data they have collected.Their hope is that by comparing the conditions on the ground with the conditions in the air,it may be possible to learn much more about how lightning is produced,why some storms produced baseball-sized hail,and why others produce floods and tornadoes.
56.According to the passage,large,disordered storm systems can be causedC.
A.by tornadoes
B.by large hail and ice
C.when humid air and hot,dry air meet
D.when water drops make clouds grow too large
57.Which of the following actions did the scientists carry out first?B
A.They collected storm data.
B.They waited for bad weather.
C.They measured water drops.
D.They drove toward the storm front.
58.The research data collected by the scientists in KansasA.
A.was so great that it will take time to sort out properly
B.has provided clear answers to the scientists'questions
C.will lead to other research projects at the STEPS labs
D.has explained why some storms produce hail and others do not
59.What's the passage mainly about?B
A.How scientists used what they knew about storms in their research.
B.How the scientists tried to learn more about serious storm systems.
C.How scientists collected different data on land and in the air.
D.How scientists chose Goodland Kansas as their research base.
分析 文章大意:去年夏天八周,从大学和政府来的科学家们在气象实验室进行天气风暴电气化和降水的研究及过程.
解答 56-59:CBAB
56题答案:C考查细节理解题,根据文中的一段In this area,humid air from the Gulf of Mexico meets hot,dry air from the southwest,resulting in storms so huge that they can last for days as they move east across the country可知 在这地区,从墨西哥湾来的潮湿的空气与从西南部来的干燥高温空气相遇造成风暴雨如此巨大以致他们可以持续几天向东穿越整个国家,故答案是C.
57题答案:B考查细节理解题,根据文中的二段also knew that super cells could produce terrible weather,including tornadoes(龙卷风).What the scientists did not know可知 他们也知道,超级细胞云可以产生可怕的天气,包括龙卷风.,故答案是B.
58题答案:A考查细节理解题,根据文中的最后一段Researchers say that it will take years for them to understand all the data they have collected可知 研究人员说,要了解他们所收集到的所有数据还需要几年的时间,故答案是A.
59题答案:B考查主旨归纳题,根据文中的大意科学家们试图了解更多关于严重风暴系统的知识,故答案是B.
点评 本文是一篇日常生活类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.
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