I lost my way in complete darkness and ________ it began to rain.

A．to make matters worse was that

B．what made matters worse was that

C．making matters worse,

D．made matters worse

人类在利用化学方法改造物质的过程中,总是用一系列的科学观念作为指导,以铁的冶炼为例,请把下面左列中解决生产问题的措施与右列中对应的科学观念用连线连接起来：