下列说法有误的一项是（    ）

在等边三角形的三个顶点a、b、c处，各有一条长直导线垂直穿过纸面，导线中通有大小相等的恒定电流，方向如图．过c点的导线所受安培力的方向（   ）

国家利益影响着国际关系的走向，而国际关系的变化又主导着世界格局的调整。20世纪至今世界政治格局先后经历的演变是（    ）

请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。
    One night Mr. Lee was driving his wife home from work. She was a nurse in a hospital. It was almost midnight and she was quite tired. She soon fell  a____, Mr. Lee looked at her and smiled.
    Mr. Lee was a  careful and experienced driver. He knew it was safer to drive slowly on a dark night.  A____ a while, he noticed a car following him. It was travelling very fast. Suddenly it overtook(超过) his car.  .
    The driver of the car was in such a  h ____that he did not see the approaching(临近的）truck. To avoid hitting it, he suddenly turned his car. The car skidded(滑) off the road and hit a big tree. The driver and the passengers were injured(受伤). They were badly hurt by the  b____  glass of the car. Mr. Lee quickly  s____ his car and called the police. His wife got out of the car to help them. About twenty-five minutes   l ____ , a police car and an ambulance(救护车)  a____. The injured were taken to hospital.
    The policemen wrote down details of the accident. Mr. Lee and the truck driver told t____ what they could remember. The policemen  

t ____ them for their help. Then Mr. Lee and Mrs. Lee got into their car and continued their journey.