【单选题】Many inventions ________ our environment a lot.
【单选题】The term odyssey years is originated from ____________.
【简答题】听对话,选择正确答案。 1. How many inventions did Edison make in his life? [ ] A. One thousand. B. About one thousand. C. Over one thousand. 2. When did Edison die? [ ] A. In 1931. B. In 1913. C. In 1930...
【判断题】教师要仔细分析日常生活活动可能确立哪些常规,既不能规定过细,限制过多,也不能太笼统,常规操作性要强。
【单选题】目前船用沸腾式海水淡化装置海水加热和蒸汽冷凝是_____进行。
【单选题】目前船用沸腾式海水淡化装置海水加热和蒸汽冷凝是______进行。