题目

_____ is no possibility to visit the factory, for the rain is so heavy.     A. It                B. There           C. That            D. This 答案： 【解析】B句型考查There’s no possibility to do sth.没有可能做某事，要防止误选it,如果用的话，它的句型为It is not possible to do sth.下列物质中属于氧化物的是（ ）A．O2B．NaOHC．H2OD．H2SO4