对于给定的文件file，统计其中所有包含字符串”WHU”的行数的一条命令是______
参考答案：grep WHU file | wc -l
Li Ping was born_________ .
A．in the year 1984，at 10 a.m.on June 18th
B．on June 18th at 10 a.m.in the year 1984
C．at 10 a.m.in the year 1984 on June 18th
D．at 10 a.m.on June 18th in the year 1984
[36——40] （ ）
有抑制骨髓造血功能的药物
A．羟氨苄青霉素 B．氯霉素C．头孢他定 D．克拉维酸E．红霉素
