按要求完成句子

小题1:The panda comes from Africa . (改为否定句 )

The panda                       from Africa .

小题2:I use a computer at the weekend .(对划线部分提问)

                    you use a computer?

小题3:He often makes a birthday card for his son .( 改为否定句)

He         often         a birthday card for his son .

小题4:They are healthy food . (改为一般疑问句)

                 Healthy food ?

小题5:My sister is on the left .(对划线部分提问)

                  your sister ?

相对于以股权交易为对象的资本市场，货币市场具有的特征是()。

A．高风险、高收益

B．高风险、低收益

C．低风险、高收益

D．低风险、低收益