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
51
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、To save water.
B、To protect the soil.
C、To establish the roots.
D、To let the water run off the surface.
答案
A
解析
短文最后提到,有效浇水的其中一个技巧是中间停一会儿,等待土壤吸收水分,否则,水会从表面流失,造成浪费。因此,在土壤吸收水分的时候停止浇水是为了节约水。
转载请注明原文地址:https://tihaiku.com/zcyy/3702346.html
相关试题推荐
Water...thisfive-letterwordisonethatCaliforniansseealmostdailyinhe
Whatdoesthenewsitemsayabouttheundergroundtrainaccident?[originaltext]
WhathaveEuropeanfoodmanufacturersbeengivenoneyeartodo?[originaltext]T
WheredidAlbertoContadorhavethetestforthebannedsubstance?[originaltext
WhatwasthepurposeofJoe’sskateboardjourney?[br][originaltext]W:Welcome,
WhatwasthepurposeofJoe’sskateboardjourney?[br][originaltext]W:Welcome,
WhatwasthepurposeofJoe’sskateboardjourney?[originaltext]W:Welcome,JoeD
ChrisissurprisedthatHollyhasleftthecafe.[br][originaltext]M:Hello,Ho
ChrisissurprisedthatHollyhasleftthecafe.[br][originaltext]M:Hello,Ho
ChrisissurprisedthatHollyhasleftthecafe.[originaltext]M:Hello,Holly.Yo
随机试题
Lookatthenotebelow.Youwillhearacallingabouttimeofarrival.Flight:【
Thursdaymarkedthe42nd()ofman’sfirststeponthemoon.A、ceremonyB、decadeC
AIRPORTSONWATERRiverdeltasaredifficultplacesfor
Awisemanoncesaidthattheonlythingnecessaryforthetriumphofevili
[originaltext]W:I’dliketogocampingwithyouthisweekend,butIdon’thave
物权中只能是动产物权的是()A.所有权 B.抵押权 C.留置
在车道减少的路段、路口,机动车应当()。A.借道超车 B.依次交替通行 C.
教育结构通常指包括基础教育、_____、高等教育、_____在内的各种不同类型和
根据投资对象的不同,证券投资基金的划分类别不包括()。A、股票基金 B、债券
有关压力管道的安装许可,下列说法不正确的是( )。A.长输管道安装许可由国家市
最新回复
(
0
)