文章列表

• 1.英语听力：2013-06-02 完美捕食 Perfect Predators —14
• propel this creature weighing as much as a grizzly bear, from a dead stop to a launch speed of 50 kilometers per hour all in a fraction of a second. I...
• 2.英语听力：2013-05-31 完美捕食 Perfect Predators —13
• Picture a living plane, and that gives you a sense of what Quetzalcoatlus would look like in life. And this is an animal that probably accelerates ove...
• 3.英语听力：2013-05-29 完美捕食 Perfect Predators —12
• Deinonychus instinctively knows to go for this giants weak spot, its neck. Youve got the windpipe there. Youve got the jugular vein, which if opened u...
• 4.英语听力：2013-05-26 完美捕食 Perfect Predators —11
• They are actually increasing their chance of getting a meal. Its a strategy still used today. Working together, lions will take on prey as big as a fo...
• 5.英语听力：2013-05-24 完美捕食 Perfect Predators —10
• These Olympic capabilities come down to one simple anatomical feature, its tail. Half the length of its body, it acts like a built-in counterbalance. ...
• 6.英语听力：2013-05-22 完美捕食 Perfect Predators —9
• And Sauroposeidon like most plant eaters are smelly. Unlike a meat eater, they produce huge amounts of waste, feces that form a trail marking everywhe...
• 7.英语听力：2013-05-19 完美捕食 Perfect Predators —8
• Sauroposeidon towers over Deinonychus. In fact, its mammoth size is its primary defense. But this giant begins life very small. For Deinonychus, Sauro...
• 8.英语听力：2013-05-17 完美捕食 Perfect Predators —7
• Attacking another T-Rex may seem like suicide, but a creature with such a voracious appetite has to find food by any means. Cannibalism is the rule. I...
• 9.英语听力：2013-05-15 完美捕食 Perfect Predators —6
• Thats what it wants to hear, because that sound is gonna mean thats where lunch is. A battle with Triceratops is more often than not a fight to the de...
• 10.英语听力：2013-05-12 完美捕食 Perfect Predators —5
• Hearing, smell and sight are all well refined. We can look at the sense of vision and see the attributes of a predator. T-Rexs eyes are 40 centimetres...