Oceans becoming more acidicThe world's oceans are slowly getting more acidic, say researchers from California say the change is taking place in response to higher levels of carbon dioxide in the
英文发言稿书写格式范文1 hello! ladies and gentlemen, it is so nice to meet you! I am glad that you can spend this precious time having this class in this afternoon. Now please allow me to introduce myself to y
英语建议信格式范文 21 June 2006 Dear Mary, Thanks for your last letter. I'm so glad that you have been able (at last! ) to arrange a holiday in Australia. As I fear I won't be able to meet you at the a