仪器分析
参考答案：
是基于测量某些物质的物理性质或物理化学性质、参数及其变化来确定被测物质组成与含量的一类分析方法。
The reason_______ he didn’t come was _______ he was injured.
A．that; because
B．why; that
C．why; because
D．that; that
