为什么有些鲨鱼在黑暗中发绿光？A glow-in-the-dark (在黑暗中发光的) shark sounds like something out of a movie. But sharks do glow in the ocean. Some sharks glow green when they’re in the dark. Why is that?When animals glow ……

Why do fireflies glow?萤火虫为什么会发光？Q: How do fireflies (萤火虫) light up?A: Fireflies and many sea... they glow? Some scientists think it's a warning sign to other bigger animals not to eat them ……

sharks are able to detect magnetic fields.Other animals that do it, such as trout and pigeons, possess an iron mineral called magnetite in their bodies. Sharks, however, do not possess magnetite ……

鲨鱼靠“心理地图”导航。SOME sharks can make “maps” in their heads. These maps can guide them to reach places... in their minds.“Tiger sharks follow some kind of path when they swim long distances (距离),” Yannis ……

鲨鱼杀人：是捕猎本能，还是出于对人类的好奇？
suggest that some sharks, such as the great white, bite humans not because they are attacking, but because they are trying to work out what the human is. Here are some tips on how to handle a shark ……

Scientists find cocaine in some sharks’ bodies.   TUCHONG   鲨鱼... in wild sharks.How did the cocaine end up in the sharks? There are a few guesses. According ……

, without light. However, that’s not the case for some kinds of sharks.A recent study finds that some... of how tiger and thresher sharks know where they are going. While increasing evidence shows they make ……

.How long do animals live?But Greenland sharks are not the oldest animals in the sea. Sponges can live...动物界的“老寿星”We often say, “May you live a hundred years! (祝你长命百岁)” Greenland sharks (格陵兰鲨鱼) might ……

为什么有些蘑菇会发光？为什么有些蘑菇会发光？Fireflies can glow (发光). Mushrooms can do it, too. Fireflies can glow (发光). Mushrooms can do it, too. Look. These mushrooms glow green at night. Look ……

each other.D. The two sharks fought each other.2. How did the author escape to dry land?2. How did...Facing danger (PII)Facing danger (PII)Choose the best answer:Choose the best answer:1. What do we ……

the story? A. What food sharks live on. A. What food sharks live on. B. How we can live with sharks together.B. How we can live with sharks together.C. Why sharks are not dangerous ……

信不信由你Some Greenland sharks (格陵兰鲨) live to be 200 years old. ……

未来植物也许能自己发光照亮街道。How do you light up the night sky? The answer is by using electricity. But did you know that nature can glow (发光), too?Scientists have found many glowing creatures (生物). Most of them ……

of these huge animals are now in danger. What is happening to sharks? Can we do something to help... are a student, you can do something to help save endangered animals. HereTeensshows you some useful tips ……

’t know some basic (基本的) facts about whale sharks – for example, how long they live... some basic (基本的) facts about whale sharks – for example, how long they live ……