【单选题】As we all know, the 29th Olympic Games _____ in Beijing in 2008. [ ]
【判断题】有损身体健康的化学药品分为两大类,一类是具有刺激性腐蚀性药物,一类是有毒化学药品。()
【单选题】齿轮传动比准确,但传动比不如 ( ) 大。
【简答题】As we all know, eating habits are different in different countries. The Chinese have a . “Eat good things for breakfast, eat a big meal for lunch, but eat at dinner.” Many Americans agree that one sho...
【简答题】完形填空。 Do you know how to study better and make your study more effective (有效的)?We all know that Chinese students usually study very hard for long 1 .This is very good but it doesn't 2 a lot,for an eff...