2022年英语专四听力dictation练习(19)

2021-11-26 17:38:00来源:网络

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  Finding the Direction and Location

  How can you tell which direction? By day, look for the Sun. It isin the

  east in the morning and the west in the afternoon. Atnight, use the Big Dipper

  to help you find the North Star. Itwould be better to bring a compass because

  its needle alwayspoints north.

  How do you know how far you have gone? You could countevery step. Each step

  is about two feet. You’d better wear apedometer which is a tool that counts

  steps. If you know where you started, which direction youare heading, and how

  far you have gone, you can use a good map to figure out exactly whereyou

  are.

  Today there is a new way for travelers to figure out where they are. It is

  the GPS. It has 24satellites that orbit the earth and constantly broadcast their

  positions. Someday you may carry asmall receiver as you hike and use GPS to find

  out if you are there yet!

  Useful Words and Expressions:

  1. dipper北斗七星

  2. compass 罗盘

  3. pedometer 步数计

  4. GPS=Global Position System全球定位系统

  5. orbit 轨道,绕……轨道而行

  6. receiver 接收器

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