and give the plane energy to fly. 21ST...滴油不费的太阳能飞机。A PLANE flew for more than 18 hours over the US on Saturday and didn’t use a drop of oil ……

. During the day, the solar cells change solar power to electricity (电能) and make the plane fly. Meanwhile....Rays (光线) of the sun produce heat energy, called solar power. An hour’s worth of sunlight on Earth ……

they took off he warned Icarus not to fly too close to the sun and not to go near the ocean.Icarus... and climbed and was thrilled to fly like a bird.But he forgot his father’s warning.The sun’s rays melted ……

, quite simply, there is now a plane (or “chariot”) that is powered by the sun. It has special parts in its wings. These parts absorb power from the sun. They absorb so much power that they can carry ……

!THE sun gives us light and makes us warm. But do you know that the power of the sun can help us cook? We call it solar power. Solar power is the power of the sun’s rays (光线) on the Earth. People can change ……

, the plane should be light enough so that it would not use too much power. It should also be strong enough... the plane. It weighed 1,600 kg and only needed the power of a small car.After this successful flight ……

(吸收) power from the sun. They absorb so much power that the plane can still fly even at night... than the gods themselves.This plane is called Solar Impulse. It will fly across the US in May ……

it can take the maximum (最多的) power from the sun. The solar power is stored in batteries. In the dark, the plane changes its shape into a straight line. This is the shape that needs the least power to fly ……

Green planeLook at this small plane. Its name is Oxyflyer. It is the first plane to fly on batteries (靠电池飞行). ……

for a plane so light and dependent (依靠) on the sun.Engineers on the $93.5 million project have been... the speed of a fast bicycle, a solar-powered plane took to the skies for the first time. It had passed an ……

What's the fastest plane?CONCORDE was the fastest plane in the world. It could travel faster than sound!Sound can travel at about 340 metres per second. But Concorde could fly at over 600 metres per ……

的) speed of 150km/h and fly up to 3km high.The plane’s uses include industrial and agricultural production...ELECTRIC (电动的) planes are many boys’ favorite toys. But a new electric plane has been made in China ……

lessons. We learn to control (控制) the plane to take off and land3. We learn to fly a plane on a flight... (暴风雨), I tried to fly the simulator to get away from it. At last I made it (成功)!” Sun says proudly ……

), the little plane couldn’t fly very high. It crashed (坠毁) a few minutes after take off.Climbing out...只是多两只麋鹿而已，能怎样？TWO men hired (雇佣) a pilot (飞行员) to fly them to Canada, so they could hunt moose (麋鹿 ……

-Cola’s recipe remains a secret. Day 3Using the power of the sun (P5)Choose the best answer:1. What... of the sun.Day 4Use the storm to fly higher (P6)Choose the best answer:1. What does the eagle do when ……