Passage TwoInventions and Technology from Ancient ChinaQuestions 19 to 21 are based on the passage you have just heard.[音频][音频]
A. The process for making silk.
B. The process for making paper.
C. How a compass worked.
D. How a kite worked.
[音频]
A. To draw maps.
B. To guide ships in the water.
C. To help when lost in the woods.
D. To plan cities.
[音频]
A. For communication in the army.
B. For children to play with.
C. To measure distances.
D. To test the wind.
Passage ThreeThe Great Wall of ChinaQuestions 22 to 25 are based on the passage you have just heard.[音频][音频]
A. 150 miles.
B. 2,500 miles.
C. 5,500 miles.
D. 1,000 miles.
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