1)It's takes about 16 hours

2)ET3 stands for "evacuated tube transport technology"

3)The capsusles use electricity

4)Most mordern airplanes usually only fly at about 800 kilometers per hour 

5)Because there is no air inside the tube and the capsusles are quite light

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1. It will take 2 hours. (But in the future, the trip from New York to Beijing might only take two hours.)
2. ET3 stands for "evacuated tube transport technology". (dòng 1 và 2 của đoạn 2)
3. The capsules use electricity instead of gasoline.(dòng 4 của đoạn 2)
4. Most modern airplanes usually only fly at about 800 kilometers per hour. (That is much faster than airplane - most modern airplanes usually only fly at about 800 kilometers per hour.)
5. Because there is no air inside the tube and the capsules are quite light. (How can these capsules travel so fast? The answer is that there is no air inside the tube...Beside, the capsules are quite light.)