气相色谱分析中，程序升温的初始温度应设置在样品中最易挥发组分的沸点附近。( )
参考答案：对
She ______ behind the door in order not to be found. Two minutes later she was safe again.
A．hold her breath
B．catch her breath
C．held her breath
D．lost her breath
地之相去也千有餘里。（《孟子》）：
