The Thunderbirds perform a fly-over as graduates from the Air Force Academy toss their hats in the air at the conclusion of their commencement ceremony in Colorado Springs, Colorado, US, on June 2 ……

shipjettrucktankmotorcycle. ……

as well. A US company made a flying motorcycle (摩托车) called Speeder. It is the world’s first flying motorcycle.Speeder doesn’t have wheels (轮子) like other motorcycles. It has a touch screen (触摸 ……

noodles.* In China, many people enjoy noodles and dumplings.DAY 3Riding in the air (P6)Choose the answer: 1. What does Speeder look like? A. It looks like a car.B. It looks exactly like a motorcycle ……

motorcycle (摩托车). A US company made it. The company calls it the world’s first flying motorcycle. Speeder.... To reach that speed, Speeder mainly uses diesel fuel (柴油) to fly. The company will do more research ……

热气球的盛会。HOW did people fly before there were airplanes (飞机)? Hot air balloons (热气球)! The big balloon flies with the power (力量) of fire and takes people through the sky. On Sept 19, the International ……

you have to stay on the ground. But what if (如果……会怎么样) you could fly? Speeder is a flying motorcycle. A US company made it. It is the world’s first flying motorcycle. Do you want to fly it? You have ……

fly through the air at 426 km per hour. This is even faster than a train. ... sport (球拍运动)? It is badminton. The racket hits the shuttlecock (羽毛球). The shuttlecock can fly through ……

(塑料的) garbage bag in a cool, shady (有树荫的) place. Hold it open and move it through the air until... bigger and become lighter than the air around it. Finally your sun-warmed garbage bag will fly ……

(塑料的) garbage bag in a cool, shady (有树荫的) place. Hold it open and move it through the air until... bigger and become lighter than the air around it. Finally your sun-warmed garbage bag will fly ……

often.What causes CAT?What causes CAT?When planes fly over 4,600 meters high, fast air meets slow air. The two make air pockets (气流旋涡). This makes planes go through CAT.When planes fly over 4,600 ……

: “Hey, your stomach is empty!”How do hot air balloons (气球) fly?There is a heater (加热器) under... ___________________4. How do hot air baloons fly?Because ___________________Read an encyclopaedia(《百科全书》) with your ……

in the air for a long time.Amazing bubbleAmazing bubbleThe air goes through the seed’s “hairs”.This makes an air bubble above the seed.The bubble helps the seed fly stably ……

会飞的自行车This bicycle is different. It can fly! British company Xplore Air made this flying bicycle. It can fly as high as 1,000 meters. ……

birds move through the air and tried to use it on their models. Finally on Dec 17, 1903, their first...莱特兄弟开创人类飞行新时代。HUNDREDS of years ago, most people thought that human beings would never fly. Yet two ……