—It's exciting that Shengzhou Ⅶ was set up into space successfully.

—Yes,but it_________ impossible in China in the past.[ ]

A. found  

B. felt  

C. looked  

D. seemed

糖类的主要食物来源是谷类和根茎类食品，（）是食物纤维的主要来源。

A、蔬果类

B、家禽类

C、家畜类

D、海产类