一次数学竞赛共有20道题

I think English is .我想英语是.英语和中文 为什么 直到现在我一直认为他是诚实的 英语 l always think John is honest —— —— — 带水和月的繁体字15划的字有哪些啊? 关于英语中形容词前置后置意思变化的词 .老师说 最少有8个 ,我只知道 present,absent他们的意思改变有谁知道剩余的 越多越好 present,为什么这里用的是形容词,动词不可以吗?We had to queue for hours to get in and there must have been several hundred people present just before the show began. best like best like 我就问这两个 解释这两个词就可以了 没看明白 骑组词有哪些 骑什么组词 充要条件 必要条件P:1 什么叫必要条件,充要条件,那何为充分不必要条件，何谓必要不充分条件 数学充要条件“二次函数y=ax2+bx+c的图像关于Y轴对称”的充要条件是. 数学求充要条件关于x的方程|x|－|x－1|＝a有解的充要条件是 水的繁体是什么? 数学充要条件若命题ax^2-2x-3>0不成立,是真命题,则实数a的取值范围是 金字旁加三个田念什么 一个多边形除了一个内角外,其余各内角的度数和为640度,则这个内角的度数为? 要有过程~一个多边形除了一个内角外,其余各内角的度数和为640度,则这个内角的度数为?要有过程~ most recently-made films by Zhang Yimou received depressing reviews;people were flooding into the cinema to see The Flowers of War (2011),his latest film,___A.therefore B.thus C.though D.otherwise ( ) people learned to read in the past because books were expensive and rare( )people learned to read in the past because books were expensive and rareA.Few B .A few C.Little D.A little 充要条件与必要条件求证：关于x的方程ax的平方+bx+c=0有一个根为1的充要条件是a+b+c=0 三个木是什么字 present是不可数还是可数? present 可数不可数? 如果要写一篇作文 关于 吴斌的 有什么好的题目? 仁开头的成语 distant的名词 distant的副词,名词形式 distant的名词词性是怎样拼写的? 我写了一封英文信,求英语高手来帮我改改啊Dear Depp:Hello, I am a fan of you from China, I 15 years old, the first time I saw you are in "pirates of the Caribbean factory" series movie, I think you cool, I like you very strange pirate 开头和结尾的相同成语 （）德 （）德 关于darethe little girl ____the forest A.didn't dare go to B.dared not to go to C.dare not to go to D.dares not go to 英语4选1（will you& will us）Let us leave here,______ A.shall you B.will you C.shall we D.will we我选了D 草头下面三个白字怎么读?