练习3.x

练习3.xTag内容描述：<p>1、常用逻辑用语试卷（三）1命题“若，则且”的逆否命题是（ ）A若，则且 B若，则或C若且，则 D若或，则2命题“若，都是偶数，则也是偶函数”的否命题是（ ）A若，都是偶数，则不是偶数B若，都不是偶数，则不是偶数C若，都不是偶数，则是偶数D若，不都是偶数，则不是偶数3设，则是的（ ）A充要条件 B充分不必要条件 C必要不充分条件 D既不充分也不必要条件4设甲：的解集是实数集；乙：，则甲是乙成立的（ ）A充分不必要条件 B必要不充分条件 C充要条件 D既不充分也不必要条件5已知命题：，有；命题：，有，则下列命题是真命题的是（ ）A B C 。</p><p>2、2019中考英语完形填空课外基础练（3）及答案Passage AThe earliest maps were probably drawn in the Middle East. Some of these maps have __1__ and they show us the people at that time thought the earth flat(平的). As time went by, the pictures became more detailed and maps were more __2__ made. Later on, ancient Greeks(希腊人)used their __3__ of math and science to make maps. Greek maps tell us the Greeks knew the world was __4__. From simple pictures, mapmaking has turned into a science. Maps are ma。</p><p>3、河北省临漳县第一中学高二数学上学期期末复习练习 不等式3学校:_ __________姓名：___________班级：___________考号：___________一、选择题1若，则（ ）A. B. C. D.2设实数满足不等式组，则的最大值为（ ）A.13 B.10.5 C.10 D.03不等式的解集为A. B. C. D.4若不等式对任意实数均成立，则实数的取值范围是（ ）A. B. C. D.5设，则的大小关系为（ ）A BC D6若，则（ ）A BC D7设，则下列不等式成立的是 （ ）A BC。</p><p>4、中考英语阅读理解专项训练3阅读下面5篇短文,掌握大意，然后从每小题所给的A、B、C、D四个选项中，选出一个最佳选项。ACentral Park, New York, United States一It was opened in 1857 Central Park is the most visited park in the United States Its over 800 acres with many beautiful buildings like Belvedere Castle and Bethesda Fountain.Hyde Park, London, England一It is in the center of London, and it is famous for its Speakers Comer. This park is a beautiful green lung (肺) of the city and a great place to pas。</p>