名优绿茶的汤色、叶底以（）为好
A、嫩绿
B、黄绿
C、黄暗
D、暗褐
参考答案：A
A．He smashes it with its long powerful tail.
B．He bites it with its teribble pointed teeth.
C．He holds it below the water until it drowns.
D．He swallows it because he has a huge mouth.
扑救A、B、C类和带电火灾应选用( )灭火器。
A．磷酸铵盐干粉B．二氧化碳型C．泡沫D．水
