The birds can coordinate themselves because they respond so quickly to their neighbours. No single starling leads the swarm. Instead, each individual reacts as its neighbour changes direction or speed. We now know that starlings do this ingroups of around seven: the movements of each ...
A bird flying alone can fly about 150 miles in one day if the wind is strong to help it. But birds flying together can fly over 500miles in one day.()46. What does the word “ flap" mean in the second paragraph? A.蹂躏 B.拍打 C.刺激 D.斗争()47. What shape do the geese ...
For thousands of years,humans have dreamed of flying.The ancient Greeks told the legend of Icarus,a boy flies so high that the sun melts his man-made wings and he comes crashing down to Earth.Across history,many more people have died after jumping from a tower or cliff with man-made win...
He studied the flight of birds and even designed his own flying machines, but they — and he — never left the ground. Five hundred years later, standing on a windy hill in North Carolina, in the U.S. I was about to make the dream come true. Unlike Leonardo, I had the help of ...
By contrast, in a swarm the drones fly together and are aware of their surroundings, how close they are to one another, and use algorithms to avoid obstacles while not getting in each other’s way, like a flock of birds. More advanced versions use AI to coordinate the actions for tasks...
Flying, for humans, seemed an impossibility. Yet, many continued to dream of flying as free as birds. One such dreamer was the great 15th-century artist and inventor Leonardo da Vinci. He studied the flight of birds and even designed his own flying machines, but they - and he - never ...
G. As food sources are rich in the north each spring, millions of birds migrate from south to those areas. 免费查看参考答案及解析 题目: [阅读理解] Thousands of years ago, Britain was covered by thick forests, home to many animals which no longer live in the United Kingdom. There were...
But it is not___a day for honoring the dead. It is also a good time to celebrate the___of spring. With the coming of spring, nature___, dressing the world in green. All is new, clean and fresh. Birds begin to___houses for their babies. In forests and fields, many animals hav...
months.Theymeasuredwhenthefirstjackdawsbegantheircalls,howloudthebirdswere,andhowquicklytheswell(增强)ofcallsrose,andthencomparedthesesoundstofootage(镜头)ofthosebirds'departures.Theteamfoundthatthejackdawgrouplefttogetheroncethechorusofcallsreachedacriticalmass--themorerapidlythechorusswelled,theearlierthebirds...
71. (s)ixth 72. (l)arge 73. (w)ear 74. birds 75. Rules 76. won 77. music 78. proud 79. daily 80. cheered 81. were 82. father’s 83. fighting 84. the 85. to break 86. by 87. went 88. and 89. carefully 90. difficulties ...