单词:exchangeable cation percentage
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很久不见的好友Lisa, Karen和Gina一起吃饭。三个人都说,现在手头很紧,彼此交换勤俭持家的经验。Gina说,她们家实行三十天规则,想买什么东西,先要等上三十天,如果三十天过后还觉得需要
[00:02.17]Unit 24 Society Warm-up [00:05.98]Exercise 2 Listen to a radio news report [00:10.24]about changes in British society. [00:13.23]Match the topics with the graphs below. [00:17.35]A recent report on British society [00:19.50]has shown that m
Education Report - United Nations Report Urges Putting Education to Work From VOA Learning English, this is the Education Report in Special English. A new United Nations report says over two hundred million young people in developing countries have n
很久不见的好友Lisa, Karen和Gina一起吃饭。三个人都说,现在手头很紧,彼此交换勤俭持家的经验。Gina说,她们家实行三十天规则,想买什么东西,先要等上三十天,如果三十天过后还觉得需要
WASHINGTON, April 12 (Xinhua) -- The International Monetary Fund (IMF) on Tuesday lowered its forecast for global growth in 2016 to 3.2 percent, saying that the global economy grows at a sluggish pace that leaves the world economy more exposed to ris