单选题正常成人血液总量约占体重的10％。( )

单选题认为教学的主要任务在于训练学生的智力或思维而与传授知识无关紧要的理论是______

单选题It is certain that he will _______his business to his son when he gets old.

单选题选用某种测验时，必须首先考虑的质量指标是( )。

单选题关于自由软件不正确的描述为 ( )

单选题下列哪项不是新月体性肾小球肾炎的病变( )

单选题若∫f(x)dx=x2+C，则∫xf(1-x2)dx=______A．-2(1-x2)2+CB．2(1-x2)2+CC．D．

单选题网络地址中HTTP是指______

单选题There is no end to the magic within this circle of the world we live in. The greatest magicians today are【C1】______the physicists and chemists, the mathematicians and astronomers: the wise men seeking the answers【C2】______the riddles of earth and universe. But【C3】______of them can tell us how to walk【C4】______a floor, "by the law of gravitation"【C5】______the readiest answer【C6】______that. Gravitation is【C7】______the most familiar thing in all the world, and we were all brought【C8】______on the story of Newton and his apple and the law of gravitation.【C9】______physicists have begun to say that gravitation may be【C10】______an illusion. If it is an illusion,【C11】______it is pure magic that【C12】______our feet on the ground and our furniture【C13】______floating off into space. And who cares,【C14】______the magic works and the illusion is【C15】______? It is all a matter of vocabulary【C16】______, for no two scholars have ever agreed【C17】______a definition of magic: but there is no denying【C18】______every time man has finally understood and explained a【C19】______he has ceased to call it magic and called it【C20】______instead.

单选题Skating can be good for you______correctly.

单选题王维山水诗突出的艺术特点是( )

单选题《宝玉挨打》选自 ( )

单选题在任何时刻，Access2010可以同时打开()个数据库。

单选题柳永的词集是( )

单选题自然科学的教育内容之所以不可能在古代社会占主导地位，主要是因为古代社会()

单选题We ______ building the bridge by the end of next month.

单选题司机在看见“减速慢行”的标志后马上放慢车速，这是 ( )

单选题His knowledge of English literature is______mine.

单选题在人的发展中起主导作用的因素是（）。

单选题《五代史伶官传序》的中心论点是( )