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、Those living outdoors. B、Those in active growing and blooming. C、Those growing slowly. D、Those having been watered. B录音中提到,突然
A、Those living outdoors. B、Those in active growing and blooming. C、Those growing slowly. D、Those having been watered. B录音中提到,突然
admin
2013-09-16
69
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、Those living outdoors.
B、Those in active growing and blooming.
C、Those growing slowly.
D、Those having been watered.
答案
B
解析
录音中提到,突然遭遇寒冷对植物是最大的威胁,特别是对那些正在快速生长或开花的植物风险更大。故选B)项。
转载请注明原文地址:https://kaotiyun.com/show/QY97777K
0
大学英语六级
相关试题推荐
FreshwatersuppliesinAsiaandsouthAmericaisdisappearingastheglaciersmeltaway.MostofAntarcticaappearstobeimmu
Corporationsandindividualdonorswillnowbeabletoclaimtaxdeductions(减除,扣除)fordonationstoanylicensednon-profitpub
A、Theneedtoexercisethememory.B、Howthebraindiffersfromotherbodytissues.C、Theunconsciouslearningofaphysicalact
A、Theexperimentwilltakealongtime.B、Thestudentsshouldcounttheirtimeinthelab.C、Dr.Waltersteachesbiologyinthe
ThecounselorwarnedBrianandCherythattheywouldnolongerbeAmericancitizensiftheywantedtoadoptchildrenfromSouth
Researchonfriendshiphasdemonstratedthat______.Studiesoffriendshipshaveindicatedthatinseekingfriendswe______.
NiagaraisanIndianword,whichmeans"roaringwater".Indeed,theroarofthe【C1】______waterofNiagaracanbeheardwithina
NiagaraisanIndianword,whichmeans"roaringwater".Indeed,theroarofthe【C1】______waterofNiagaracanbeheardwithina
MT.Cashwantedtobuyanewapartmentneartheseaand____________________(他决定向抵押贷款人借钱).
HumanNetworkingIknew,nocomputerortechnologyevergotanyofusaraise,landedusthatdreamjob,foundusthatmento
随机试题
《安全生产法》对安全生产危险性较大的行业进行了规定,“矿山、建筑施工单位和危险物品的生产、经营、储存单位,应当()。”
肝破裂休克病人,下述哪个监测休克措施是不必要的
理想的麻醉最重要的是
A、慢性支气管炎B、大叶性肺炎C、阿米巴肺脓肿D、肺结核E、支气管扩张铁锈色痰常见于
关于国际条约与国内法的关系,依我国目前的实践,下列哪一表述是正确的?()
单一品牌战略的实施条件有()。
A公司于2013年4月1日发行公司债券一批,面值为1000万元,发行价格为1060万元,期限3年,票面年利率为5%,每年付息一次,到期一次还本并支付最后一期利息,付息日为每年的4月1日;另支付发行费用3.43万元,实际收到发行价款1056.57万元存入银行
人借助于骨骼、肌肉实现的,通过学习而形成的符合法则的操作活动方式,称为()
[*]
Howdoesthewomanstartherspeech?
最新回复
(
0
)