什么是定位装置？

阅读理解。

      When I was 14, I was too nervous to talk to anyone. My classmates often laughed at me. I was sad,

but I could do nothing. Later, something happened. It changed my life. It was an English speech contest.

My mother asked me to take part in it. What a terrible idea! It meant that I had to speak before all the

teachers and students of my school.

      "Come on, boy, believe in yourself. You are sure to win." Then my mother and I talked about many

different topics. At last, I chose the subject "Believe in yourself". I tried my best to remember the whole

speech and practiced it over 100 times. With my mother's great love, I did well in the contest. I could hardly

believe my eyes when the news came that I had won the first place. I heard the cheers from the teachers

and students. Those classmates who looked down on me, now said "Congratulations!" to me. My mother

hugged me and cried excitedly.

1. 请将划线句子译成汉语。

    _____________________________________

2. 根据短文内容填词，每空一词。

    I ______ ______ be nervous and was afraid to talk to people, but now I have changed a lot.

3. 请给短文拟写英语标题，词数不超过三个。

    ______ ______ ______

牵拉坐骨神经的试验有（）

A.直腿抬高试验

B."4"字试验

C.颏胸试验

D.压颈试验

E.Kernig征（+）

美发师说话的语音（），音量适中.

A.亲切

B.热情

C.悦耳

D.清晰

分析Masterpact MT断路器意外跳闸的可能原因（按钮指示器没有发出故障跳闸信号）。

将原料药加工制成适用于医疗、诊断和预防需要的形式，称为（）