一、Read and fill. Xinxin研究了从古至今的导航工具。请读一读，根据图片把单词写在横线上，补全句子。

1. The is one of the four great inventions(发明) in ancient(古代) China.
2. Sometimes, we can look at the sky at night. can help us find the way.
3. Look at the of the area(地区). We're in front of the park.
4. When we drive the car, can help us find the place.

1. compass 2. Stars 3. map 4. BDS

二、Read and choose. Xinxin和家人用北斗卫星导航系统找到了一家有名的餐厅。请读一读，选择合适的句子，将短文补充完整。
Xinxin and her family want to go to a famous restaurant. 1. How can they get there? 2. Then turn right and turn right again. 3. The BDS works!
A. There is the restaurant.
B. They're in front of the cinema now.
C. First go straight and then turn right at the hospital.

1. B 2. C 3. A

三、Read and judge.在古代，人们迷路了会怎么办呢？在现代，又有什么工具能够帮助人们找到路呢？请读一读，判断下面句子的正(T)误(F)。
If people are lost, they can find their way in many different ways. In ancient times, people could use trees, stars, even the ant hole(蚁穴) to find the directions. People could also use the compass to find their ways. They have used the compass for a long time. In modern times(现代), people usually use the map. It can help them find the place very quickly. But nowadays(现在), people use BDS. It can tell them where they are now and how they can get to the place that they want to visit. They can believe(相信) it and follow it. It's very convenient(便利的).
()1. If people are lost, they can find their ways in only one way.
()2. In ancient times, people couldn't use trees, stars or the ant hole to find the directions.
()3. People have used the compass for a long time.
()4. The map can help people find the place very quickly.
()5. People can believe BDS and follow it.

1. F 2. F 3. T 4. T 5. T