单选题地球围绕着它的轴旋转。如果它的形状是一个完美的球体，内部组成非常对称，完全呈刚性，同时在空间中绝对独立，那么它会永远围绕一个固定的轴旋转下去。然而上述假定都是错误的，地球是处于颤动状态的。1988年7月，科学家发现了地球的第四种颤动形式.而在此前已经知道有三种不同的颤动形式。当你在夜间仔细观察群星的运动时，会发现它们在空中围绕某个点做圆周运动，而这个点恰恰在地球北极的正上方。如果年复一年地研究这些
单选题依次填入下面括号处的语句，顺序最恰当的一项是（ ）。无论走到什么地方，有时是转过一幢房子，（________），矗立在你面前。有时是坐在树下，（________），又看到它的影子。或者在公园的亭子里，你刚探出身，（________），（________）。如果站在湖边，（________），常常能引起你好一阵神思。①一片翠幕般的青峰②忽然一座高倚天表的山峰③它那粼粼波动的倒影④就张挂在亭子的飞檐
问答题阅读下面文字，按照要求作文。孟子说：“人有不为也，而后可以有为。”《礼记·学记》中说：“学，然后知不足。”韩愈说：“业精于勤，荒于嬉；行成于思，毁于随。”古人的这些观点对你有什么启发?请结合自己的学习经验、生活经历，写一篇作文。立意自定，文体自选（诗歌除外），题目自拟。不少于600字。
问答题游移的花朵绿萍老家院墙的一侧是一间储物室.里面放置着各种家什。门后的墙上钉着一排钉子，其中就挂着一只金黄色的斗笠。竹编的斗笠在闽南的田间太寻常了，它们的地位虽不如一只耕犁、一辆水车，在春夏多雨的南方却是人手一个的必需品。插秧或者收割的农忙时节，女子们早晨出门都会随手捎上它。春雨来临的时候，只要下得不太细密，戴上它可以继续劳作而不必停下手上进行了一半的活儿。到了酷夏，它又能遮挡光线，起到防晒的作用。
问答题游移的花朵绿萍老家院墙的一侧是一间储物室.里面放置着各种家什。门后的墙上钉着一排钉子，其中就挂着一只金黄色的斗笠。竹编的斗笠在闽南的田间太寻常了，它们的地位虽不如一只耕犁、一辆水车，在春夏多雨的南方却是人手一个的必需品。插秧或者收割的农忙时节，女子们早晨出门都会随手捎上它。春雨来临的时候，只要下得不太细密，戴上它可以继续劳作而不必停下手上进行了一半的活儿。到了酷夏，它又能遮挡光线，起到防晒的作用。
问答题国侈则用费，用费则民贫，民贫则奸智生，奸智生则邪巧作。故奸邪之所生，生于匮不足；匮不足之所生，生于侈；侈之所生，生于毋度。故曰：审度量，节衣服，俭财用，禁侈泰①，为国之急也。不通于若计者，不可使用国。故曰：入国邑②，视宫室，观车马衣服，而侈俭之国可知也。节选自《管子·八观》【注】①侈泰：奢侈无度。②国邑：国都。分别概括文中两次“故曰”所提出的观点。
问答题游移的花朵绿萍老家院墙的一侧是一间储物室.里面放置着各种家什。门后的墙上钉着一排钉子，其中就挂着一只金黄色的斗笠。竹编的斗笠在闽南的田间太寻常了，它们的地位虽不如一只耕犁、一辆水车，在春夏多雨的南方却是人手一个的必需品。插秧或者收割的农忙时节，女子们早晨出门都会随手捎上它。春雨来临的时候，只要下得不太细密，戴上它可以继续劳作而不必停下手上进行了一半的活儿。到了酷夏，它又能遮挡光线，起到防晒的作用。
单选题Can animals be made to work for us?Some scientists think that one day animals may be trained to do a number of simple jobs that are now done by human beings.They point out that at a circus,for example
单选题请选出下面划线部分读音不同的选项
单选题I have been hearing-impaired in my life since I was five years old.Putting on hearing aids in the morning has been just as（21）as brushing my teeth.However I never believed that it should limit my（22）i
单选题Some villagers were going to celebrate an important wine festival（酒宴）in a few days′time,so they borrowed a huge barrel from the nearest town,put it in the village square,and decided that each of them
单选题I have been hearing-impaired in my life since I was five years old.Putting on hearing aids in the morning has been just as（21）as brushing my teeth.However I never believed that it should limit my（22）i
单选题Some villagers were going to celebrate an important wine festival（酒宴）in a few days′time,so they borrowed a huge barrel from the nearest town,put it in the village square,and decided that each of them
单选题Around the world more and more people are taking part in dangerous sports and activities.Of course，there have always been people who have looked for adventure--those who have climbed the highest mount
单选题When and where to build the new factory__________yet.
单选题It is very kind__________you to supply us__________so much information.
单选题Some villagers were going to celebrate an important wine festival（酒宴）in a few days′time,so they borrowed a huge barrel from the nearest town,put it in the village square,and decided that each of them
单选题After ten years of being a housewife and a mother,Carol could not stand it any longer.Then,one morning,just after her two daughters had gone to school,she saw an advertisement（广告）in the pa-per.She pho
单选题Mr.Smith was engaged__________writing a novel.
单选题Some villagers were going to celebrate an important wine festival（酒宴）in a few days′time,so they borrowed a huge barrel from the nearest town,put it in the village square,and decided that each of them