【单选题】【消耗次数:1】
Its ( ) that he has been away from home.
evident
important
genuine
alternative
参考答案:
复制
纠错
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
【判断题】 粗加工所用的定位基准称粗基准,精加工所用的定位基准为精基准。
①  正确
②  错误
【判断题】 车床主轴的径向跳动不会影响车削轴类零件的圆度误差。
①  正确
②  错误
【判断题】 为了防止工件变形,夹紧部位要与支承对应,不能在工件悬空处夹紧。
①  正确
②  错误
【判断题】 工件在夹具中定位,有六个定位支承点就消除了六个自由度即为完全定位。
①  正确
②  错误
【单选题】 车床主轴的纯轴向串动对()的形状精度有影响。
①  切削内外圆
②  车削端平面
③  车内螺纹
④  切槽
【单选题】 钻削时切削热传出的途径中所占比例最大的是()
①  刀具
②  工件
③  切屑
④  空气介质
【单选题】 工件以圆柱面在短V形块上定位时,限制了工件()个自由度。
①  5
②  4
③  3
④  2
【单选题】 某零件属单件小批生产但定位精度要求较高,应采用()装夹。
①  自动找正
②  直接找正
③  划线找正
④  使用夹具
【单选题】 既可加工铸铁,又可加工钢料,也适合加工不锈钢等难加工钢料的硬质合金是 ( )
①  YW类
②  YT类
③  YN类
④  YG类
【单选题】 在金属切削加工中,刀具切下来的切屑厚度通常()工件上切削层的厚度。
①  小于
②  都有可能
③  大于
④  等于