再生塔冷凝器的作用是（）。
A、回收能量
B、回收水
C、回收碳酸盐
D、回收CO2
参考答案：B
The crowd cheered wildly at the sight of Liu Xiang, who was reported ______ the world record in the 110-meter hurdle race.
A．breaking
B．having broken
C．to have broken
D．to break
军旗军徽内容是什么？
