题目

    Mac Carter, a British father of 14-year-old Ben who has autism (自闭症), searched on the Internet to find a specific kind of little blue cup for his son.     When Ben was two, Mac gave him a little blue cup that was made in China and ever since the cup has become one of the most important things in Ben's life. Mac never thought that the little cup would cause such a big problem. Ben became dependent on this cup because ever since he received the gift he would only drink water from the exact type of little blue cup. Over 12 years, Ben refused to drink water without the cup. 梯形中只有等腰梯形是轴对称图形．正确正确．