我国现存最早的兵书是哪部？
参考答案：
《孙子兵法》
能补肝肾，强筋骨，安胎的药物是（）。
A.淫羊藿
B.巴戟天
C.益智仁
D.黄芩
E.杜仲
The naughty boy had wanted to play football with the kids in the street, but his parents warned him ____.
A．not to
B．not to do
C．to do
D．of doing
