【单选题】【消耗次数:1】
Its ( ) that he has been away from home.
evident
important
genuine
alternative
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相关题目
【单选题】 He has been there, [填空]?
①  hasnt he
②  has he
③  does he
④  doesnt he
【单选题】 The garden ____ while the Greens were away from home.
①  took good care of
②  was taken good care
③  was taken good care of
④  was taking good care
【单选题】 The garden _______while the Greens were away from home.
①  took good care of
②  was taken good care
③  was taken good care of
④  was taking good care
【单选题】 Trees mainly serve man in three important ways: They provide him with wood and other products; they provide 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(固定) 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 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, with which to gain itself an empire.It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation(饥荒).Why did the country mentioned in the passage suffer from floods and starvations?
①  Because it set up an empire.
②  Because it fell to pieces.
③  Because it turned its trees into warships.
④  Because it spent too much money on wars.
【单选题】 This job is great ( ) advancement, but its too far away from my hometown.
①  in terms of
②  as a result of
③  based on
④  on behalf of
【判断题】 He has been in china for three years.
①  正确
②  错误
【单选题】 Trees mainly serve man in three important ways: They provide him with wood and other products; they provide 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(固定) 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 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, with which to gain itself an empire.It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation(饥荒).According to the passage, which is the most important service of trees to man?
①  They help him make money.
②  They give him cool.
③  They give him wood and other things.
④  They help him to stop droughts and floods.
【单选题】 Trees mainly serve man in three important ways: They provide him with wood and other products; they provide 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(固定) 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 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, with which to gain itself an empire.It set up the empire, but, without its trees, its soil became poor and grew weak. When the empire fell to pieces, the home country found itself faced by floods and starvation(饥荒).In many places forests slowly disappear because __________.
①  many trees have been cut down by man
②  new trees are not well looked after
③  man has not paid enough attention to planting trees
④  all the above
【单选题】 He has been to Beijing . So [填空] I.
①  have
②  does
③  do
④  did
【单选题】 he park has been built and it will be open _____ three years
①  A. in
②  B.for
③  C.on
④  D.after
随机题目
【单选题】 数据库系统包括硬件、软件、( )和人员。
①  数据库
②  数据
③  系统
④  大数据
【单选题】 数据库管理系统的简称是( )。
①  DBS
②  DBMS
③  DBA
④  DB
【单选题】 数据库系统实现了整体数据的( ),是数据库的主要特征之一。
①  程序化
②  标准化
③  结构化
④  多样化
【单选题】 常见的结构数据模型有层次模型、网状模型和( )。
①  联系模型
②  实体模型
③  关系模型
④  概念模型
【单选题】 数据的独立性包括物理独立性和( )独立性。
①  逻辑
②  结构
③  控制
④  管理
【单选题】 数据库的查询和更新操作属于数据( )功能。
①  定义
②  操纵
③  建立
④  维护
【单选题】 概念数据模型是用来描述与某个特定组织相关的( )。
①  信息结构
②  组织结构
③  结构形式
④  表示方法
【单选题】 数据库系统的外模式、模式、内模式称之为三级( )。
①  结构
②  框架
③  层次
④  模式
【单选题】 内模式是数据库中全体数据的内部表示或底层描述,是数据库最低一级的逻辑描述,对应于( )。
①  概念级
②  物理级
③  用户级
④  全局概念
【单选题】 外模式通常是模式的( )。
①  子集
②  应用需求
③  子模式
④  用户模式