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
58
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
According to the passage,spring is the best time for plants in desert_________.
A:to find a shady place
B:to get water for their growth
C:to reduce water loss
D:to enjoy the sunshine
答案
B
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/ujEQKKKQ
相关试题推荐
Evensensiblemendoabsurdthings.(2007年真题)()A.unusualB.ridiculousC.specialD
Thatguyisintelligentbutabitdull.(2007年真题)()A.strangeB.specialC.quiet
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 EconomicReforminChinaMoreUSsinologistshaveexpressedconfidencei...
随机试题
1、患者,男,35岁。患顽固性偏头痛,现右侧面神经麻痹1周,右眼闭合露睛,饮水外
诱发排卵的药物是 A、枸橼酸氯米芬 B、绝经促性素(hMG) C、绒促
下列各选项中,属于建筑幕墙节能工程施工的隐蔽工程验收的是()。
对建设工程项目目标进行主动控制的主要作用在于()。
企业社会工作的功能包括( )。
一般认为,使用成瘾性物质后产生“快感”是由于 A突触间隙DA降低 B突触
下列哪幅作品是达芬奇的作品?( )A.《向日葵》B.《最后的晚餐》C.《日出印象》D.《亚威农的少女》
基金托管协议是基金管理人和()签订的协议,主要目的在于明确双方在基金财产保管、投资运作、净值计算、收益分配、信息披露及相互监督等事宜中的权利、义务及职责,...
中药药效受肠道内微生态环境影响主要是指A.肠道内食物B.肠道内菌群C.肠道内水分D.肠道蠕动E.肠道内pH
实践表明,良好的(?)管理已经成为商业银行的主要竞争优势之一,有助于提升银行的盈利能力和实现长期战略目标。A.市场风险B.流动性风险C.声誉风险D.国家风