阅读短文，下列问题

      A boy goes to the cinema. He buys a ticket and goes in. But after two or three minutes he comes out. He buys a second ticket and goes in again. After a few minutes he comes out again and buys a third ticket. Two or three minutes after that he comes out the fourth time and asks for another ticket. The girl says to him, “Why are you buying all these? Are you meeting friends in the cinema all the time?”

     “No, I'm not doing that,” the boy says. “But a big woman always stops me at the door and tears(撕掉) my tickets.”

依次填入下面这段文字横线处的语句衔接最恰当的一组是（  ）
大国间的博弈当然存在，没有人会天真地认为中美两国可以“亲密无间”。         ，
         。         ，         ，          。
①别狭隘地理解国家利益
②这个世界不是随时都剑拔弩张的
③也别狭隘地理解国际关系
④但国家利益的表达需要外交技巧
⑤国际关系也需要一种更平和的描述

世界上没有两片完全相同的树叶，也找不出没有任何差异的两个人。这句话表明（    ）

 喝酒不开车，开车不喝酒。酒后驾驶是一种违法行为。酒精的化学式为C₂H₅OH。下列有关酒精的说法正确的是