题目

I wonder why you won’t do it as ____. It’s the third time you have done so.     A. told to    B. be told        C. told you      D. you told   答案：A本部分为as you are told to do it 的省略表达。下列物质的性质属于物理性质的是 [     ]A．汽油易挥发B．红磷可以燃烧C．氧气具有氧化性D．氢气具有可燃性