Section 5 2 今後、飛行機はどのようなものになるのでしょうか。 What will airplanes be like in the future? One company is planning to invent a new type of airplane. The airplane will not have any windows. The walls and the ceiling will be the screens. The airplane has exterior cameras. The passengers can exterior [ik see the outside scenery on the screens. This type of airplane uses fewer materials, so it is lighter. worla New types of engines will use bio-fuels, electricity, or solar energy. They will be eco-friendly 10 and won't make much noise. The speed is expected to be Mach 4.5, or 5,500 kilometers per hour. We will be マーク able to enjoy a convenient and comfortable flight. Airplanes are developing and evolving day by day. What can you imagine future airplanes might QR 15 look like? ceiling [sí or s bio-fuel(s) [báioufjù:el( eco-friendly [ékoufréndli Mach [má:k per [páir]

1. Why is the new type of airplane lighter than today's airplane? euombolew [2. Will new types of engines make less noise than today's ones?moitoautrient tromoo bas vietse wo eruano vodTaenigneds oals GLA planes