汉字16*16点阵字库中，每个汉字的点阵需要用（）字节表示。
A.256
B.128
C.32
D.16
参考答案：C
什么是液控单向、其工作原理如何，有何用途．
--- I called you yesterday but you weren’t at home.
--- I ______ flowers in my garden at that time.
A．water
B．am watering
C．watered
D．was watering
