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
2024-08-03
23
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、Water it often.
B、Water it deeply.
C、Water it every ten days.
D、Water it only in hot season.
答案
B
解析
短文中提到,一旦树木已经稳固.要减少浇水的次数,一次浇足。在最炎热的季节.深浇水可以保证一棵树木十天至两周的需水量。
转载请注明原文地址:https://tihaiku.com/zcyy/3703484.html
相关试题推荐
What’stherangeofyuanfluctuationwithinatradingday?[br][originaltext]
What’stherangeofyuanfluctuationwithinatradingday?[br][originaltext]
What’stherangeofyuanfluctuationwithinatradingday?[br][originaltext]
Wherecouldtheladyfindtheman?[br][originaltext]Listentotheconversatio
Thestudentislookingforajoboncampus.[br][originaltext]Listentotheco
Thestudentislookingforajoboncampus.[br][originaltext]Listentotheco
Thestudentislookingforajoboncampus.[br][originaltext]Listentotheco
Thestudentislookingforajoboncampus.[originaltext]Listentotheconversa
[originaltext]1.W:Mr.Johnson,Iwonderwhetherit’spossibleformetotake
[originaltext]1.W:Mr.Johnson,Iwonderwhetherit’spossibleformetotake
随机试题
StudentlifeatAmericanuniversitiesischaoticduringthefirstweekofea
Itisdifficulttoimaginewhatlifewouldbelikewithoutmemory.Themeani
Everyyearalotofuniversitystudentsstepoutofschoolandenterthesoc
Holdingontothebeliefthatchildrenwillshedtheir"babyfat"astheyge
现在建造大楼,第一步是搞设计,然后才有大楼的建成。设计就是求大楼之理,因此“理在
某患者检测空腹血糖为11.0mmol/L,HbAlc为6.5%,则该患者很可能为
“语言表达能力”指标中的“用词准确性”是()的标准。A.描述式 B.方向指示
用托烷生物碱反应鉴别的药物是A.地高辛B.硫酸阿托品C.地西泮D.异烟肼E.苯巴
1,-3,4,1,25,()A.15 B.100 C.325 D.
根据《民法典》,除担保合同另有约定之外,主合同无效的,担保合同( )。2014
最新回复
(
0
)