爱国主义是千百年来巩固起来的对自己祖国的一种最深刻的感情。由于历史发展阶段和具体历史环境不同，爱国主义的内容和重点也有所不同。阅读下
有关合金的叙述正确的是( ) A．合金的导电性比成分金属强 B．合金的抗腐蚀性能都很好 C．合金的机械强度比各成分金属小 D．多数合金比成分金
The child should be punished. You shouldn't let him ________ telling lies A．keep away from B．keep away with C．get away from D．get away with
On today’s show, we’ll focus on how e – business can help change people’s lives, as well as the career outlook of college graduates. After that, we’ll attend an interesting introd
下列有关于Cl2的说法中，不正确的是 A．Cl2是一种黄绿色、密度比空气大的有毒气体 B．Cl2能与水反应生成盐酸和次氯酸 C．工业上用Cl2和石灰水为原料
— your father have a white car? —Yes，he ． A．Does：do B．Do；does C．Does；does D．Do；do
已知函数f（x）=|2x﹣1|﹣|x+2|． （1）求不等式f（x）＞0的解集； （2）若存在x0∈R，使得f（x0）+2a2＜4a，求实数a的取值范围．
Suspecting the traveler of carrying drugs, the Customs official stopped him andhis suitcase, but found nothing at all. A. looked up B. went through C. searched
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