若数组a定义为int[][]a=new int[3][4],则a是
A.一维数组
B.二维数组
C.三维数组
D.四维数组
参考答案:B
解析: 题目中定义了一个三行四列的二维数组。
现在世界各国公认并普遍采用的生物命名法的创立人是( )
A.达尔文
B.林奈
C.李时珍
D.袁隆平
.I got caught in the rain and was wet all over. _____I had followed my mother’s advice and take an umbrella with me!
A.As if
B.Even if
C.If only
D.Only if