【单选题】
设有如下说明语句:typedefstruct{intn;char*ch;}PER;则PER被定义为:()
【单选题】
语句〈a name=“second”〉text〈/a〉的作用是( )。
【单选题】
The estimated quantity of rice per acre [填空]5 tons.
【简答题】
What does the second principle mean?
【单选题】
The students can read English at the [填空] of 200 words per minute.
【单选题】
Are you going to do it [填空] second time?
【单选题】
Was it during the Second World War _________ he died?
【单选题】
Was it during the Second World War _________ he died?
【判断题】
5 yuan per person 中文意思为:每人5元
【单选题】
They ____ that the aging population is adding 1 per cent yearly to health service costs.