首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
共用题干 第三篇Only special plants can survive in the terrible climate of a desert,...
共用题干 第三篇Only special plants can survive in the terrible climate of a desert,...
admin
2020-12-24
53
问题
共用题干
第三篇
Only special plants can survive in the terrible climate of a desert,for these are regions where the annual range of the soil temperature can be over 75℃.Furthermore,during the summer there are few clouds in the sky to protect plants from the sun's ray.Another problem is the fact that there are frequently strong winds which drive small-sharp particles of sand into the plants,tearing and damaging them.The most difficult problem for all forms of plant life,however,is the fact that the entire annual rainfall occurs during a few days or weeks in spring.
Grasses and flowers in desert survive from one year to the next by existing through the long, hot,dry season in the form of seeds.These seeds remain inactive unless the right amount of rain falls.If no rain falls,or if insufficient rain falls,they wait until the next year,or even still the next.
Another factor that helps these plants to survive is the fact that their life cycles are short.By the time that the water from the spring rains disappears—ust a few weeks after it falls一such plants no longer need any.
The perennials(多年生植物)have special features which enable them to survive as plants for several years. Thus,nearly all desert perennials have extensive root systems below ground and a small shoot system above ground.The large root network enables the plant to absorb as much water as possible in a short time.The small shoot system,on the other hand,considerably limits water loss by evaporation(蒸发).
Another feature of many desert perennials is that after the rainy season they lose their leaves in preparation for the long,dry season,just as trees in wetter climates lose theirs in preparation for the winter. This reduces their water loss by evaporation during the dry season.Then,in the next rainy season,they come fully alive once more,and grow new branches,leaves and flowers,just as the grasses and flowers in desert do.
选项
The last paragraph is mainly about__________.
A:the comparison between plants in different areas
B:the growth of new leaves in the rainy season
C:water loss by evaporation in the dry season
D:the changes in the leaves of the perennials
答案
D
解析
细节题。第一段前三句分别列举了影响植物在沙漠中生长的三个因素: soil temperature(选项D) ,sun's rays(选项B ) , strong winds(选项A)。只有选项C没有提及。
推理判断题。可根据第二段前三句推断出答案。选项A无原文依据,选项B前半句不对,选项D则有悖常理。
细节题。本题解题的关键是注意题干是关于shoot system的提问,而不是 root system。在第三段最后一句可找到相关信息,并由此可确定选项D为正确选项。
推理判断题:第一段的最后一句谈到降雨量集中在春天,第二段第二句谈到种子在下雨季节才发芽生长,由此可推断出选项B正确。其余三项均无原文依据。
主旨大意题。第四段第一句通过Another feature引出本段的主题句,本句的中心词是perennials和leaves,据此可以判断选项D正确。其他选项均没有关注这两个中心词。
转载请注明原文地址:https://ti.zuoweng.com/ti/3jEQKKKQ
相关试题推荐
Thatguyisintelligentbutabitdull.(2007年真题)()A.strangeB.specialC.quiet
Evensensiblemendoabsurdthings.(2007年真题)()A.unusualB.ridiculousC.specialD
共用题干 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
共用题干 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
共用题干 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
共用题干 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
共用题干 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
共用题干 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
共用题干 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
共用题干 TheJoyofLivingAloneMoreandmoreAmericansarelivingalone.Someli...
随机试题
(19-20题共用题干) 49岁男性患者,心绞痛。行N-NHPET心肌灌
某公司进口一批冻猪肉(检验检疫类别P.R/Q.S),货物在香港转船。请根据所
当一国经济处于低谷时,经济增长为负增长,以此为特征的经济周期通常被称为()。
纤维增强塑料衬里施工时,其胶粘剂是()。
患者,男,42岁,经医生诊断为阳虚夹湿之泄泻,遂开附子理中丸,效果不理想。经询问
下列关于商业银行代理业务的说法,不正确的是( )。
把大班上课、小班讨论、个人独立研究结合在-起,并采用灵活的时间单位代替固定划一的
已知轴两端作用外力偶转向相反、大小相等,如图示,其值为T。则该轴离开两端较远处横截面上剪应力的正确分布图是: A.图a)B.图b)C.图c)...
下列选项中,关于劳动者的收入,属于工资范围的有()。A.劳动者在端午节期间加班获得的报酬B.企业支付劳动者劳动保护方面的费用C.企业支付劳动者的生活困
甲公司是ABC会计师事务所的常年审计客户,主要从事医疗器械设备的生产和销售。A类产品为大中型医疗器械设备,主要销往医院;B类产品为小型医疗器械设备,主要通...