氢氧化钙俗称___________ 或___________ ，其水溶液通常叫做___________ 。
消石灰 ；熟石灰 ；石灰水
道路交通信号灯的种类有哪些？
— What do you think of this football match?
— I've no idea. But is believed that Spanish team will win. [ ]
A. that
B. this
C. which
D. it
