【单选题】Natural Medicines Since earliest days, humans have used some kinds of medicines. We know this because humans have survived. Ancient treatments for injury and disease were successful enough to keep hum...
A.
much more successful than modern ones
B.
successful enough for humans to survive
C.
successful in all cases
D.
of little help to humans
【判断题】The earliest recorded metal employed by humans appears to be gold which can be found free or "native".的汉语意思是最近记载的人类应用的金属,看起来是作为商品的黄金 。
【简答题】请将第一单元正文中第2自然段(P1)逐句翻译。注:一句英文对应一句中文,手写后拍照上传。 The earliest humans have access to only a very limited number of materials. those that occur natural stone, wood, clay, skins, and so on. With time they di...
【单选题】注塑模标准模架中的B板尺寸通常表示的是()厚度尺寸。
【简答题】The earliest humans had access to only a very limited number of ________ materials, such as : stone, wood, clay, skins, and so on . With time they discovered techniques for producing materials that ha...
【判断题】The earliest recorded metal employed by humans appears to be gold which can be found free or "native". 的汉语意思是 最近记载的人类应用的金属,看起来是作为商品的 黄金 。 C. 不确定 D. 可能正确