新gre考试实施以来,不仅对写作部分茫然不知所措,就连我们所擅长的数学也甚是担忧,相信这其中的原因还是由于考生在新gre数学复习时没有把基础打牢。如果新版gre数学基本考点都没有复习到,如何能拿到分数呢?所以说,想要新版gre数学考好,复习的时候一定要把基本概念和重要考点都弄扎实。
Intersection of Sets
Intersection of two sets is another set with only the members that are in both sets. If the two sets do not share any common member, the intersection is the empty set with no member.
Example:
Intersection of {1,2,3} and {2,3,5} is the set {2,3}.
Intersection of the set with all primes and the set with all even numbers is the set {2} since only 2 is both even and prime.
Intersection of {1,2,3} and {4,5,6} is the empty set {}.
Remember:
Intersection contains only the common members.
Two sets are disjoint if they have no member in common, that is they have an empty intersection.
Union of Sets
Union of two sets is another set with all the members from both sets.
Example:
Union of {2,3,5} and {1,3,4} is the set {1,2,3,4,5}.
Union of {1,2,1} and {1,2} is the set {1,2,1}.
Remember:
The common members do not repeat in the union.
由于美国数学基础教育的难度增加导致数学考试越来越难,但新gre数学复习考点都是高中时候学到的知识点,考生不要过于紧张,把基本概念弄明白,再记住一些新版gre数学必备的词汇,那么相信新版gre数学应该没有问题。
职称英语理工类B级阅读理解精华练习(9)
职称英语综合类的阅读理解练习题(31)
职称英语考试理工类阅读理解必备练习题(1)
职称英语考试理工类阅读理解必备练习题(7)
2014年职称英语理工类A级阅读理解练习(6)
职称英语考试理工类阅读理解必备练习题(9)
职称英语综合类阅读理解练习题(7)
2014职称英语理工类教材阅读理解文章(4)
职称英语综合类阅读理解练习题(9)
职称英语综合类的阅读理解练习题(40)
职称英语理工类B级阅读理解精华练习(6)
职称英语理工类B级阅读理解精华练习(12)
2014年职称英语考试理工类B级模拟阅读(3)
2014年职称英语理工类教材新增内容阅读理解篇(5)
职称英语综合类阅读理解练习题(11)
职称英语理工类B级阅读理解精华练习(1)
职称英语综合类阅读理解练习题(25)
职称英语综合类阅读理解练习题(10)
职称英语综合类阅读理解练习题(20)
2014职称英语理工类教材阅读理解文章(3)
职称英语综合类阅读理解练习题(35)
职称英语综合类阅读理解练习题(13)
2014职称英语阅读理解练习题(7)
职称英语综合类阅读理解练习题(24)
职称英语考试理工类阅读理解(8)
2014职称英语阅读理解练习题(3)
2014职称英语阅读理解练习题(4)
职称英语理工类B级阅读理解精华练习(10)
职称英语综合类阅读理解练习题(38)
职称英语综合类阅读理解练习题(21)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |