首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It is easy to grow despite the poor soil. B、It is good for improving the quality of land. C、It is the most suitable plant for
A、It is easy to grow despite the poor soil. B、It is good for improving the quality of land. C、It is the most suitable plant for
admin
2010-07-24
21
问题
Windbreaks are barriers formed by trees and other plants. Farmers plant these barriers around their fields to protect their land.
Windbreaks stop the wind from blowing soil away (33) . They also keep the wind from destroying or damaging crops. They are very important for protecting grain crops.
There have been studies done on windbreaks in parts of West Africa, for example. These found that grain harvests can be twenty percent higher in fields protected by windbreaks compared to fields without such protection (33) .
But windbreaks seem to work best when they allow some winds to pass through them (341. If the wall of trees and plants blocks the wind completely, then violent air motions will take place close to the ground. These motions will lift soil into the air where it will be blown away.
There should be at least two lines in each windbreak. one line should be large treas. The second line, right next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are best for windbreaks.
If the quality of the land is not very good, studies have shown that one kind of tree that can grow well is the white pine (35) .
Windbreaks not only protect land and crops from the wind. Surplus trees can be cut down and used to provide wood (33) .
选项
A、It is easy to grow despite the poor soil.
B、It is good for improving the quality of land.
C、It is the most suitable plant for windbreaks.
D、It is short with broad leaves.
答案
A
解析
题目问从短文中对于白松有何了解。短文中提到"If the quality of the land is not very good,studies have shown that one kind of tree that can grow well is the white pine",由此可以判断A) 正确。
转载请注明原文地址:https://kaotiyun.com/show/igN7777K
0
大学英语四级
相关试题推荐
Themainreasonfordevelopingabettervocabularyistoreceiveandsendoutthoughtsbetter.Notjustwords—butideasthatwo
A、Fivemaybetoomany.B、Thedecisionmustbemadesoon.C、Itshouldbesmarttotakemore.D、Fourpeopleareenrolledinthem.
A、OneofthegreatestuniversitiesinEurope.B、Themodelformiddleschools.C、Anexampleforotheruniversities.D、Thefirstu
PreparingforTestsIdeallyitshouldbeloveoflearning,achievement,andself-improvementthatpromptsalllearning.But
PreparingforTestsIdeallyitshouldbeloveoflearning,achievement,andself-improvementthatpromptsalllearning.But
Iaskedsuccessfulpeoplewhatthesecretoftheirsuccesswas.I【B1】______anearlydiscussionwithavicepresidentofalarge
Iaskedsuccessfulpeoplewhatthesecretoftheirsuccesswas.I【B1】______anearlydiscussionwithavicepresidentofalarge
TheJapaneseareexpectinghouseguests.Thesevisitorswillstayforalongtime,servingtea,cleaninghouse,makingConversat
A、Thethreatofpoisonousdesertanimalsandplants.B、Theexhaustionofenergyresources.C、Thedestructionofoilwells.D、The
随机试题
实现计划的保证是()
人造羊毛的结构简式为:,它属于:①共价化合物、②无机化合物、③有机化合物、④高分子化合物、⑤离子化合物。
煤矿安全生产监察实行的管理体制是()。
机电工程消防验收检查后,如果形成的消防验收意见书表明该工程还有消防设施需整改,应由( )组织实施整改和自检。
表为EXCEl。学生成绩统计表,最右边的一列数据为总成绩排名,G2单元格输入的公式为“=rank(F2,¥F¥2:¥F¥10)”,则G3单元格对应的公式为()。
科学家认为,未来的仿生机器人并非是要完全模仿人类的所有功能,而是模仿某项功能。这些智能机器人有望成为“超人”,有的具有超强的记忆力,有的具有超强的学习能力,有的听觉功能特强,有的嗅觉功能特强……,__________。 填入划横线部分最恰当的一项是:
中国抗日战争能否取得最后胜利的最关键的阶段是()
A、 B、 C、 D、 A概念模型实际上是现实世界到机器世界的一个中间层次。概念模型的表示方法很多,E-R图描述现实世界的概念模型,称为实体一联系模型,简称E-R模型。
请根据下图所示网络结构回答下列问题。如果在不改变路由表项的前提下,在路由器RF最多可再连接的路由器数量是_______。
Whatwillthewomanprobablydo?
最新回复
(
0
)