22．新闻标题，是指在新闻正文内容前面，对新闻内容加以概括或评价的简短文字。一般来说，一个好的新闻标题应该具备以下几个要素：准确鲜明，言
下列各句中，加点的成语使用恰当的一句是（ ） A． “十七大”以来，中纪委严肃查处了刘志华、陈同海等大案要案，为国家挽回巨大经
David received a parrot for his birthday. The parrot had a poor vocabulary, and many were not polite. David tried hard 26 the bird’s words and was often saying polite words, playing s
设NA表示阿伏加德罗常数的值，下列说法中正确的（ ） ①常温常压下，11.2 L乙烷所含的分子数为0.5NA ②14.2g 硫酸钠固体中含有0.1NA个硫酸钠分子：
I would rather you ______ tomorrow A come B will come C came D had come
如图7-3-5所示，在一个半径为R、质量为M的均匀球体中，紧贴球的边缘挖去两个对称的半径为R／2的球形空穴后，剩余的阴影部分对位于球心和空穴中心
若不等式f（x）＝＞0的解集，则函数y＝f（－x）的图象为（ ）
For career changers thinking about growth and advancement potential, forget the blue-collar and white-collar categories: Green is the way to go. According to Bracken Hendricks, a senior fellow a
