首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The plants do not have proper temperature. B、The plants do not have enough water. C、The plants are not used to cold weather. D
A、The plants do not have proper temperature. B、The plants do not have enough water. C、The plants are not used to cold weather. D
admin
2013-09-16
48
问题
Sudden cold can be the biggest threat for plants, especially after a warm period. Plants have not had a chance to harden their defenses. (26)Those that are actively growing or flowering are at high risk. Most frost damage takes place at night. Ice crystals form on the leaf surface. They pull moisture from the leaves and keep plant tissues from getting water. (27)Cold weather is most likely to damage or kill plants that do not have enough moisture. So keep the garden watered. Moist soil absorbs more heat than loose, dry soil covered with something like vegetation.
University of Arizona extension experts say covering plants and small trees with cloth or paper can help prevent frost damage. A one-hundred watt light bulb designed for outdoor use can also provide warmth. Some people place Christmas lights on young trees for warmth. The bulbs should hang below the leaves to let the heat rise into the tree. In Florida. as temperatures fell to record lows, (28)the growers of orange trees sprayed water on their trees to help prevent freeze damage. It is explained that as the water freezes. it produces heat, and the ice forms a protective blanket around the tree. If you spray a tree, keep the water away from nearby power lines. Heavy ice can form and break them. You can also wrap a tree in palm tree frond leaves, cornstalks or fiberglass. Adding plastic film works well in rain and snow. But experts say plastic alone does not help much.
26. Q: What kind of plants are most susceptible to the effects of sudden cold?
27. Q: What is the main reason for the death of plants in cold weather?
28. Q: What do growers of orange trees do to prevent trees from freeze damage in Florida?
选项
A、The plants do not have proper temperature.
B、The plants do not have enough water.
C、The plants are not used to cold weather.
D、The plants do not have enough sunshine.
答案
B
解析
文中提到,寒冷的天气最有可能损害或毁掉缺乏水分的植物,故选B)项。
转载请注明原文地址:https://kaotiyun.com/show/hY97777K
0
大学英语六级
相关试题推荐
Thebiographerhastodancebetweentwoshakypositionswithrespecttothesubject(研究对象).Tooclosearelation,andthewriter
ThecounselorwarnedBrianandCherythattheywouldnolongerbeAmericancitizensiftheywantedtoadoptchildrenfromSouth
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Ittellsplantswhento【C1】______flowers
Accordingtothepassage,scholarsandstudentsaregreattravelersbecause______.Thewriterthinksthatthegrowthofspecia
A、Theyusuallyacceptresponsibility.B、Theyblamefactorsbeyondtheircontrol.C、Theycomplainabouttheirpersonalproblems.
A、Ittellsustherichmanisverygreedy.B、Ittellsusthefarmerisverystingy.C、Ittellsuspeopleshouldbeencouragedto
A、Snowflakesofthefirstsnowaredirty.B、Itisdifficulttoseethesnowflakesclosely.C、Weshouldenjoysnowflakesrathert
Directions:Forthispartyouareallowed30minutestowriteashortessayOnExaminations.Youshouldwriteatleast150wordsf
Todaytheworld’seconomyisgoingthroughtwogreatchanges,bothbiggerthananAsianfinancialcrisishereoraEuropeanmone
A、Theassignmentlooksquiteeasy.B、Heisalsoworriedabouttheassignment.C、Hehasalreadyfinishedtheassignment.D、Hecan
随机试题
关于水泥混凝土散水、明沟的伸缩缝设置的做法,符合要求的是()。
假设基体表面附着力与比表面有关,则粗糙度越大,附着力()。
某患者突然寒战,高热,纳差,乏力,咳嗽带铁锈色痰伴右侧胸痛,X线片示:右肺中叶实变,最可能的诊断是
下列哪项不是天癸臻熟的条件()
下列选项中是1988年初被列为沿海经济开放区的地方是()。
下列关于资本资产定价模型中β系数的表述,正确的有()。
根据公司法律制度的规定,下列有关公司变更登记的表述中,正确的是()。
社会工作领域的扩展是从困难人群到()。
左边给定的是纸盒外表面的展开图,右边哪一项能由它折叠而成?请把它找出来。
ProtectionofWildlifeDemandsforstrongerprotectionforwildlifeinBritainsomehidethefactthatsimilararefeltill
最新回复
(
0
)