首页
登录
职称英语
[originaltext] (17)Some trees can survive a long time without water. Think
[originaltext] (17)Some trees can survive a long time without water. Think
游客
2024-08-02
41
管理
问题
(17)Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than they can get from rainfall or from the air. The soil stores moisture during cooler weather. But most of that moisture is gone by the middle or end of the hottest months of the year.(18)Trees and other plants can look thirsty. Leaves hang downward and turn brown or yellow. Here are some suggestions for watering newly planted trees and established trees. With a newly planted tree, the roots have not yet spread out from the root ball. The root ball can become dry faster than the dirt around it. So put water on the area of the football and the surrounding soil until the roots become established.(19)Once a tree is well established, water deeply instead of often. During the hottest season, a deep watering may satisfy a tree for anywhere from ten days to two weeks.(20)One of the effective watering skills is to stop when the soil needs a little time to absorb the water. Otherwise the water runs off the surface and gets wasted.
17. What can we learn about trees in the desert?
18. What’s the symptom when trees look thirsty?
19. How should we water a tree after it has grown up?
20. Why should we stop watering when the soil absorbs the water?
选项
A、It will turn brown or yellow.
B、Its branches will break down.
C、Its leaves will fall on the ground.
D、Its leaves will hang downward.
答案
D
解析
短文中提到,树木和其他作物的外表会表现出口渴的迹象,当他们口渴时,叶片会下垂,颜色会变成褐色或黄色。
转载请注明原文地址:https://tihaiku.com/zcyy/3702344.html
相关试题推荐
Whatarethespeakerstalkingabout?[br][originaltext]W:Idon’treallyhave
Whatcanwelearnfromthesurvey?[br][originaltext]Washington—Asurveysaid
Whatcanwelearnfromthesurvey?[originaltext]Washington—Asurveysaid37rep
Relativehappinessmeans______.[br][originaltext]Lisa:Frank,areyouhappy?
Relativehappinessmeans______.[br][originaltext]Lisa:Frank,areyouhappy?
WhatdidHaldo?[br][originaltext]W:Hal,howlongdidittakeyoutofinish
WhatdidHaldo?[br][originaltext]W:Hal,howlongdidittakeyoutofinish
WhatdidHaldo?[br][originaltext]W:Hal,howlongdidittakeyoutofinish
WhatdidHaldo?[originaltext]W:Hal,howlongdidittakeyoutofinishMr.Wi
Wecandowithoutluxuriesandentertainment.However,food,shelter,andclothi
随机试题
Youcanlose(weigh)______byburningmorecaloriesthanyoutakein.weight名词作宾
Bob:Iheardthatyou’regoingtomove.Howaboutthenewhouse?Mike:Oh
C
公平原则的要求包括( )。A.民事主体应当本着公平的观念进行民事活动 B.民
水泥稳定粒料类基层和底基层实测项目中不是关键项目是()。A.压实度 B.厚度
治疗湿浊蒙蔽清窍所致耳鸣、耳聋宜选用A牛黄 B苏合香 C冰片 D石菖蒲
不符合表浅手术切口感染临床特征的是A.感染仅限于切口涉及的皮肤和皮下组织 B.
下列化合物中哪一个是线粒体氧化磷酸化的解偶联剂?( )A.寡霉素 B.抗霉素
钙化成分中含许多强嗜碱性间歇线的肿瘤是A.成釉细胞瘤 B.牙瘤 C.牙源性钙
A.人院率偏倚 B.奈曼偏倚 C.检出证候偏倚 D.无应答偏倚 E.回忆
最新回复
(
0
)