西方人把（）星比作神话的大海之神。
参考答案：海王
It's good for us to _______ every day. [ ]
A. do morning exercise
B. do morning exercises
C. doing morning exercise
D. doing morning exercises.
对长度为n的线性表进行顺序查找，在最坏情况下需要比较的次数为( )。
A．125
B．n/2
C．n
D．n+1
