如何制作简易火箭？. ……

如何制作简易火箭？如何制作简易火箭？TNSTNSYou can make a rocket out of some pretty unlikely things. This one works quite well.You can make a rocket out of some pretty unlikely things. This one works quite well.You ……

) on the water inside the bottle. The pressure makes the water spray (喷射) from a nozzle (喷嘴) under the rocket... applauded (鼓掌) to celebrate this exciting moment in a rocket competition that was held on May 14 ……

and applause.At the beginning of May, we were asked to make a rocket that could be powered by water. Many... our rockets.On May 14, we began our final rocket competition. Twenty rockets were selected ……

If you make a hole in a bottle of water, the water will leak (漏) out until the bottle is empty, right? Let’s put it to the test. ……

CAN you put a boiled egg inside anarrow-necked(细口的) bottle without cutting the egg or breaking the bottle? Believe it or not, you can make the egg jump into the bottle by itself!Drop three lit ……

usual, and hold and open a soft drink  bottle with one hand. Also, human brains can adapt... could carry more objects than usual, and hold and open a soft drink  bottle with one hand. Also ……

炫酷发明Bottle lock自行车水壶锁Take this bottle with you when you’re going out by bike. This is not just a bottle of water. It’s also a lock for a bicycle. A 1.5-meter-long lock hides (藏在) inside the bottle ……

有了这个瓶子，我们再也不怕细菌啦！You might take a water bottle to school every day. But you have to clean the bottle sometimes, right? If you don’t clean it, bacteria (细菌) can grow inside the bottle. This bottle can ……

The Mega Moon Rocket is the world’s most powerful. NASAThe Mega Moon Rocket is the world’s most powerful. NASA美国巨型登月火箭准备完毕美国巨型登月火箭准备完毕NASA is ready to launch the Mega Moon Rocket ……

VCGVCGUp, up and away and back again: LandSpace, a private rocket maker in China, tested a new rocket at Jiuquan Satellite Launch (发射) Center in Gansu province on Sept 11. This test helps LandSpace ……

AFPOn Oct 13, SpaceX completed the fifth test flight of its Starship rocket in Texas, US. SpaceX’s Starship is made up of  two parts: the Starship spacecraft and the Super Heavy rocket. SpaceX ……

China launched its first heavy-lift carrier rocket, the Long March 5, on Nov 3 from the coastal... targets of the mission are to *verify the design and performance of the new rocket, as well as test its ……

drink or water bottleHot waterMatchDo thisMake sure the bottle is clean insidePour about 3cm of very hot water into the bottlePut on the cap and swirl (旋转摇晃) the water around inside the bottle, wetting ……

TAKE an empty soft drink bottle and lay it on its side. Ball up a small piece of paper so that it will fit through the mouth of the bottle. Use the hot wind from a hair dryer to blow the paper ball ……