压力越大空气中的水蒸气饱和含量（），温度越高空气中的水蒸气饱和含量（）。
参考答案：越少；越多
His sister left home in 1998, and _______since.
A．had not been heard of
B．has not been heard of
C．had not heard of
D．has not heard of
有证初果的证量，何时能证到四果？
