下列不属于“碎屑结构”的沉积岩结构是（）。
A、砾状结构
B、粉砂结构
C、生物结构
D、砂状结构
参考答案：C
Our music teacher has won the first prize in the competition. We’re very _______ him.
A．angry with
B．proud of
C．famous for
D．good at
