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
专升本
Trees are useful to man in three important ways: they provide him with wood and other products; they give him shade; and they he
Trees are useful to man in three important ways: they provide him with wood and other products; they give him shade; and they he
admin
2018-01-18
96
问题
Trees are useful to man in three important ways: they provide him with wood and other products; they give him shade; and they help to prevent droughts and floods.
Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear. This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil—allowing the rain to sink in—and also bind the soil, thus preventing it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing remains but worthless desert.
Two thousand years ago a rich and powerful country cut down its trees to build warships(战船), with which to gain itself an empire. It set up the empire but,- without its trees, its soil became poor and it grew weak. When the empire fell to pieces, the home country found itself faced with floods and starvation.
Why does land become desert after all trees are cut down?
选项
A、Because nothing remains on land except floods.
B、Because there are no longer trees to keep the rain and protect the top-soil.
C、Because too much rain sinks in and washes away the top-soil.
D、Because roots of the trees break up the soil.
答案
B
解析
事实细节题。根据第二段最后两句“…but where there are no trees,the rain falls on hard ground and flows away,causing floods and carrying away the rich top- soil.When all the top-soil is gone,nothing remains but worthless desert.”可知,没有树 木,雨水就会流走,并冲走丰富的表层土壤,从而导致了沙漠化。故选B。
转载请注明原文地址:https://kaotiyun.com/show/59WC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Beinganhonestgirl,shewouldnotcheatonanexam.
Formanypeopletoday,readingisnolongerrelaxation.Tokeepuptheirworktheymustreadletters,reports,tradepublication
Formanypeopletoday,readingisnolongerrelaxation.Tokeepuptheirworktheymustreadletters,reports,tradepublication
Thewholeworldseemedtobeblack,blacknothingness.Theskywasblackwithbright,shiningstarsthatnever【C1】______.Thesu
Forthispart,youareallowedthirtyminutestowriteacompositionof120to180words.Youwritingshouldbebasedonthetitl
Environmentalawarenesshardlyexistssincemostcountriesaremoreconcerned【C1】______economicdevelopment【C2】______withglobal
I’dratheryou______makeanycommentontheissueforthetimebeing.
Childrenenjoyingparents’____duringtheirgrowthtendtohavebetterlivinghabitsthanleft-behindchildren.
Hecamebacklate,______whichtimealltheguestshadalreadyleft.
Ididnotchooseanyofthethreeofferings,becauseIfound______satisfactory.
随机试题
隐睾的病理形态中,以下哪项是错误的?
张某与李某为邻居。一日张某回家路过李某家,见李妻独自一人在家收拾衣服,遂起歹念,便破门而入,将其推倒在院内柴堆上欲行强奸,李妻大声呼救。刚好民警王某下班路过听到,王某表明身份后,喝令张某住手。张某掏出随身携带的匕首袭击王某,刺伤王某胸部,王某倒地。张某仍持
教师在一次活动中提出的通过活动计划或教案体现的目标是()
下列哪一个不是异烟肼的不良反应
下丘脑属于
(2011年单项选择第39题)在工商谈判的收局阶段,为促成成交,可以采用结果比较法。下列做法中,属于结果比较法的是()。
刑法第267条规定:“抢夺公私财物;数额较大的,处3年以下有期徒刑、拘役或者管制,并处或者单处罚金…”甲抢夺数额较大的财物构成犯罪,对甲适用上述规定处罚,可能正确的处罚是:
下列四条地形起伏曲线中,()曲线与下图中的Ⅰ-l剖面最为对应。
设{an},{bn},{cn}均为非负数列,且cn=∞,则().
Thecomprehensionpassagesonthiscoursearedesignedtohelpyouincreaseyourspeed.Ahigherreadingrate,withnolossofc
最新回复
(
0
)