下列各句中划线的成语使用恰当的一句是（   ）

﹣3×（﹣2）=（　　）

判断下面的说法是否正确，对的画“√”，错的画“×”。

①“他一定不来”和“他不一定来”这两句话意思相同              ____

②“你太聪明了！”在不同的语言环境里有不同的解释。            ____

③“我要炒猪肝”有两种意思：一是我要吃炒猪肝；二是我要做这道菜。____​

      Traffic lights are very important for us. I think you know this. But do you know how they were born?
      Garrett A. Morgan was the father of traffic lights. He was an American. His family was very poor. He left school at the age of 14. He was clever. He always looked for better ways to do things. And he liked to make new things.
      At that time, every American wanted to have a car. The streets were full of cars. The traffic was really bad. “Why not put three lights at each corner ? They should be red_,green_,and yellow，” Morgan said , “ Let them tell cars to go or stop.” He made a timer (定时器)to change the lights.
     So we have traffic lights today .

Daniel's father isn't angry_______ him.