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
62
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/3087725.html
相关试题推荐
I’mnotsupposedtoletanyoneinwithoutacard,butI’llmakeanexceptionin
[originaltext]Westarttofindthingslaughable--ornotlaughableearlyinl
[originaltext]Westarttofindthingslaughable--ornotlaughableearlyinl
[originaltext]Tomhasretiredandlivedbyhimselfalongwayfromtown.He
[originaltext]Tomhasretiredandlivedbyhimselfalongwayfromtown.He
[originaltext]Mr.Lewiswasadanceteacher.Hewasanicemanandalwaysha
[originaltext]W:Halfofmypatientshavehadcoldsthismorning.M:Ifpeople
[originaltext]W:Halfofmypatientshavehadcoldsthismorning.M:Ifpeople
[originaltext]W:Halfofmypatientshavehadcoldsthismorning.M:Ifpeople
[originaltext]W:Halfofmypatientshavehadcoldsthismorning.M:Ifpeople
随机试题
Anorganization’sreputation,profitability,andevenitscontinuedexistenc
Peoplehavewonderedforalongtimehowtheirpersonalitiesandbehaviorsa
某企业2015年的净利润为369.1亿元,利息费用为15.36亿元,所得税
Thechangeinthatvillagewasmiraculou
现医师法规定,医务工作者中具有处方权的是A.执业药师 B.药师以上专业技术职称
患者,男性,42岁,癫痫史8年。工作时突然倒地,口吐白沫,四肢强直,抽搐发作。给
供应阶段信贷人员应重点分析的有()。A.货品质量 B.货品价格 C.进货渠
HAMA主要适用于评定()。 (A)神经症性焦虑(B)精神病性焦虑
某公司出售专用设备一台,取得价款30万元,增值税3.9万元,发生不含税清理费
先张法预应力混凝土T形梁施工,整体张拉和整体放张宜采用自锁式千斤顶,张拉吨位宜为
最新回复
(
0
)