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
29
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
HumanMigrationHumanmigration:thetermisvague.
[originaltext]M:Ifelloffmybikelastweek,andmybackisstillhurtingnow
Whatarethereinoursocietynowadays?Thereare_________________.[br][ori
用硅胶薄层层析分离Ala、Leu和Lys三种氨基酸的混合物,Rf值从大到小排序为
在共享单车的约车、找车过程中,应用的地理信息技术有()。A.RSGPS B.
Thechangeinthatvillagewasmiraculou
岗位安全卫生教育的内容包括遵守劳动安全卫生规范教育和()A:个人卫生知识教育
髓海不足,则可导致( ) A.脑转耳鸣 B.目无所见 C.懈怠安卧 D
某矿建施工单位承建了一立井井筒施工任务,该井筒净直径4.5m,深度860m,为固
某仲裁委员会仲裁一施工合同纠纷案件,就该合同效力方面,首席仲裁员甲认为应裁决合同
最新回复
(
0
)