题目内容

[音频]Q: How long will it take to travel to Shanghai?

A. 48 hours
B. 38 hours
C. 45 hours
D. 47 hours

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更多问题

Q: What is the speed limit on the highway?

A. 73 KM
B. 74 KM
C. 75 KM
D. 76 KM

[音频]Q: How much can a chicken cost?

A. More than $5.80
B. More than $8.50
C. More than $8.00
D. More than $8.30

[音频]Q: When does the speaker need to arrive at work?

A. 7:15
B. 6:30
C. 7:00
D. 7:45

棱锥表面上的点的投影，可以采用来求解。

A. 积聚性
B. 辅助素线
C. 辅助平面
D. 辅助圆