
还有很多人认为他的行为应当受到谴责。but emission controls must be instituted regardless of the number of vehicles.涉及北京机动车使用量增加这一问题,有的人认为应该限制使用。反对流动工人增加的人认为这会导致犯罪率升高,他们主张应该严格限制进入中国城市的流动工人。


n个连续整数的积最后6个尾数为0,问n至少为多少?A 20B 25C 30D 35; 

what is the number of tenths of K?

1.一个轮盘分八块,三次转针指向数和为16的sequence数目?2.有三个连续整数r s t,有一表达式 N=3^r+3^s+3^t,问在以下选项中最大的因子是多少?

1.一道几何题,描述如下,大小两圆在大圆左侧内切,穿过两圆心B、D及切点A的直线交大圆于E、交小圆于C,问大圆内、小圆外的面积?2.p方法与r方法线性关系,P(6)->R(30);P(24)->,R(60) 求R=100时?p=; 

A certain musical scale has 13 kinds.每种类型有不同的频率。从小到大排列,最大的频率是最小的2倍。除最大的外,剩余的12个成等比排列。若最小的频率是440,则第7个是多少。

T,U在圆上,半径为4,弧RTU=4/3PAI,问RU的SEGMENT LENTH角ROU=360X(弧长/周长)=360X(4/3PI/8PI)=60,因此RU= r =42. n为1~100 (含)间整数,问n(n+1) 能被4整除的概率。n(n+1)肯定能被2整除.如果n(n+1)能被4整除,那么n或者n+1能被4整除,在1~100中n能被4整除的有25个.n+1能被4整除的有25个。


红利Division 除法Division sign 除号Divisor 因子,除数Divisible 可被整除的Equivalent fractions等值分数Equivalent equation 等价方程式Equivalence relation等价关系Even integer/number 偶数<


1.一枚硬币向上抛,两面的机率各为一半,问连抛三次,同一面的机率。(1/4)同一面有两种情况:6红,5蓝,without replacement,问取一蓝一红的possibility. 6/11第一次取蓝的情况 C15*C16 .第一次取红的情况:C16*C15,总共的情况为C111C110=110 则概率为 60/110=6/11; 

orE.reflects so that little of the polar ice melts during the summer;if it did


cooperating with;improving access for farmers for with governments to improve access for farmers for 

mosquito-borne diseases like malaria and dengue have focused either on;the vaccination of humans or on exterminating  

as much because of their sales of a year earlier;a year earlier being so bad as thatB.of their sales ayear earlier were as bad as that 

believed to be the cores of galaxies in an early stage of development.(A) believed to be(B) are believed to be(C) some believe them to be(D) some believe they are(E) it is believed that they are

and the rivalry with her charming and cynical cousin Basil Ransom,

many of whom