2，4，8，16，32，( )
A．48
B．64
C．128
D．256
参考答案：B
期货投资基金主要投资于政府债券和衍生品。衍生品主要包括商品期货、金融期货、远期合约、商品和金融期权、金融合约。( )
It's _____________ (windy / sunny) in Hang Zhou. 
It's _____________ (cloudy / snowy) in Harbin.
I can see three _____________ (potatoes / tomatoes). 
I want seven _____________ (carrots / carrot). 
I can see a _____________ (cat / rabbit).