We ____________ a new Chinese teacher.[ ]
A. have
B. has
C. are
答案：A
___ they visited our school, they showed great interest in everything they saw.
A．The first time
B．For the first time
C．At first
D．At the first time
室内消火栓灭火系统是（）、水带、消火栓、消防管道、消防水池、高位水箱、水泵接合器、增压水泵、等组成。
