1884年11月，俄裔德国科学家保尔·尼普可夫向柏林皇家专利局递交了他的专利申请书，第一页这样写道：“这里所述的仪器能使处于A地的物体，在任何
Mr.White, along with his assistants, ______ on the project day and night to meet the deadline. A. work B. working C. is working D. are working
The driver turned his car sharply to the left to give the way to the running bull only _________ a tree by the road.
建设节约型社会已成当务之急，是一场关系到人与自然和谐相处的社会变革。建设节约型社会要求 ( ) ①我国全面提升产业结构，大力发展循环经济 ②
生活在绿草地中的蚱蜢的体色往往是绿色的，说明（ ）A、生物能够适应环境 B、生物能够影响环境C、生物具有应激性
瘦肉精被认为是肉制品业的“三聚氰胺”，属食品行业的违禁药品，瘦肉精的化学式为C12H19ON2Cl3。则下列有关瘦肉精的说法正确的是( ) A．瘦肉精由五
Burn rate is the speed at which a startup business consumes money. My rate was $ 75,000 a month. Four months after my company was set up, I had only a quarter of the starting capital left in the b
