首页
登录
职称英语
[originaltext] Sudden cold can be the biggest threat for plants, especially
[originaltext] Sudden cold can be the biggest threat for plants, especially
游客
2024-05-01
27
管理
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://tihaiku.com/zcyy/3579141.html
相关试题推荐
[originaltext]W:AndnowhereisourguestHarrisonBlacktotellusaboutLond
[originaltext]W:AndnowhereisourguestHarrisonBlacktotellusaboutLond
[originaltext]W:Goodafternoon.ThisisJanespeaking.HowcanIhelpyou?M:
[originaltext]W:Goodafternoon.ThisisJanespeaking.HowcanIhelpyou?M:
[originaltext]W:It’stoobadIcouldn’tgettotherallyagainstfeeshikesla
[originaltext]W:It’stoobadIcouldn’tgettotherallyagainstfeeshikesla
[originaltext]W:It’stoobadIcouldn’tgettotherallyagainstfeeshikesla
[originaltext]W:It’stoobadIcouldn’tgettotherallyagainstfeeshikesla
[originaltext]W:It’stoobadIcouldn’tgettotherallyagainstfeeshikesla
[originaltext]Exerciseimprovesyourenergylevelsbyincreasingtheflowo
随机试题
WheredidMr.Finchbuyhiscottage?Heboughtasmallcottagein______.[a
HowcanIeverconcentrateifyou_______constantly_______mewithsillyquestio
适用于脱机存储电子档案的载体有①磁带、②可擦写光盘、③一次写光盘、④硬磁盘等,若
下列关于结算所和无负债结算制度的描述中,正确的有()。 Ⅰ.结算所是期货交易的
患者男,35岁。车祸外伤1小时,左颞部着力,当时有短暂昏迷,对受伤情况不能回忆。
173、断路器保护在本断路器失灵时,经GOOSE网络通过相邻断路器保护或母线
枳实薤白桂枝汤中桂枝的作用A.发汗解肌 B.温通经脉 C.助阳化气 D.降
以毛泽东为代表的中国共产党人开创了农村包围城市、武装夺取政权的革命道路,之所以能
水刀切割是一种利用高压水流切割的切割方式,下列对水刀切割的技术特点说法正确的是(
初孕妇,妊娠37周。夜间睡眠中突然出现阴道大量流血,无阵发性腹痛。查体:重度贫血
最新回复
(
0
)