When _______ about their opinion of the effect of modern equipment on their performance of tasks, many young people gave a positive response.

A．asked

B．asking

C．being asked

D．to ask

下列叙述正确的是[ ]

A．台湾河流短急，水能丰富            

B．最长的浊水溪6300千米  

C．日月潭是最大的湖泊                

D．最大的水电站是水口水电站