They lost their way in the forest, and     . Which of the following is wrong?

A．what made matters worse was that night began to fall

B．what was worse, it was getting dark

C．to make matters worse that night was falling

D．worse still, night had fallen

溶液型气雾剂在制备的时候用来作潜溶剂的是（）

A.氮酮

B.丙二醇

C.四氢呋喃

D.司盘

E.DMSO