单词：sand coarse aggregate ratio
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图片 by Jason Marshall Some math is functional. Some math is fun. And some math is simply stunning. If that last description sounds improbable to you, then today just might change your mind. Because now that weve covered enough ground, were going t
数学英语
图片1 图片2 by Jason Marshall Despite many peoples assumption to the contrary, math is undeniably artistic. It takes a tremendous amount of creative muscle and artistry to devise mathematical solutions. And, as made evident by their frequent batt
数学英语
ratio n. 比,比率 解析：in direct ratio正比 in inverse (reciprocal) ratio反比 rejected n.被弃之物,落选者vt.拒绝,抵制,驳回 解析：注意常用过去分词 辨析见decline reven
英文语法词汇
BEIJING, May 13 (Xinhuanet) - China's central bank announced on Saturday it would lower the reserve requirement for commercial lenders by 50 basis points, the second time it has taken such action this year to inject more market liquidity and shore up
英语新闻
China's sex ratio is quite worrying nowadays. According to census data, China's sex ratio at birth was 108 males to every 100 females in the early 1980s, only slightly above the natural rate of 103 to 107. In 2000 the ratio was 116.9 males to 100 fem
英闻天下
考过托福考试的同学都知道，在托福阅读中，时间是最大的敌人。要想彻底征服托福阅读，就必须提高托福阅读速度。本文小编与大家分享提高托福阅读速度的方法之一：眼动训练，希望对大
托福英语