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
2023-10-10
61
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、They only get moisture from rainfall.
B、They need more moisture than trees elsewhere.
C、They can live a long life without water.
D、They do not need water to ensure their growth.
答案
C
解析
短文开篇便提到,一些树木在没有水的情况下也可以生存很长时间,在沙漠中生长的树木就是这样。
转载请注明原文地址:http://tihaiku.com/zcyy/3088864.html
相关试题推荐
Whataddedtothedifficultyintheputtingoutofthebushfire?[originaltext]
Whofirstintroducedtheconceptofpracticalwisdom?[originaltext]Doingtheri
Onwhatdaydidtheshootinghappen?[originaltext]PresidentObamahaspraisedt
What’stheproblembeingdiscussedinthisconversation?[br][originaltext]W:I
[originaltext]M:Sothat’stheoffer,Sophie.Theworkiswellwithinourrange
[originaltext]Ml:Goodmorning,sir.M2:Goodmorning,youngman.Ml:Icouldn’ts
[originaltext]W:Hi,MrBrown.M:Hi,MsNelson.W:Well,how’syourapartmentwor
WhydidMourinholeaveChelseaclub?[originaltext]AChelseafootballcluboffic
WhichofthefollowingstatementsisTRUE?[originaltext]Morethan130,000Syria
Whatarethespeakersmainlydiscussing?[br][originaltext]W:Hi.Kevin.Yourr
随机试题
Forthispart,youareallowed30minutestowriteashortessayonthesmar
Nodirectrelationshiphasbeenprovenbetweenhighcholesterollevelsandheart
患者,男,35岁。尿频,尿道灼痛,会阴部隐痛1周。前列腺液镜检:白细胞增多,卵磷
用玉米的花药进行组织培养,单倍体幼苗期经秋水仙素处理后形成二倍体植株(该过程不考
上肢锥体束征是指A.Babinski(巴彬斯基征) B.Oppenheim(奥
对于慢性癌痛治疗,推荐选择的药物是A.氯丙嗪B.抗惊厥类药物C.三环类抗抑郁药D
文旅地产从字面上是“文化+旅游+地产”,但其本质和核心是“文旅”而非“地产”。文
世界500强企业关于优秀员工的12条核心标准:第一条,一个人的工作是他生存的基本
激励一词的含义的关键因素包括( )。A.物质要求 B.需要 C.努力 D
治疗香豆素类药过量引起的出血宜选用A.鱼精蛋白 B.维生素K C.维生素C
最新回复
(
0
)