yawns. Researchers used a robot head with human-like movements to show 14 chimpanzees three expressions...When one person yawns (打哈欠), others often yawn in return. The contagious (传染的) way yawning spreads ……

and yawns (打哈欠). It looks like she is laughing. Leopards (美洲豹) and lions may look angry after... the sunshine. She feels sleepy and yawns (打哈欠). It looks like she is laughing. Leopards (美洲豹) and lions may ……

Why do people yawn?Why do people yawn?Q: Why do peopleyawn(打哈欠)?A: A yawn isdefined(定义) as "To open...或厌倦)." As to why we yawn, no one is really sure. Many scientists think that it is the body's way ……

by disguising (伪装) themselves as real people. It’s only by uncovering this great lie that the witch hunters are able to identify and stop them. The witches also like to change little children ……

are helping people do business.  2. Why are wild boars coming into towns?2. Why are wild boars.... What is Paragraph 1 mainly about? 1. What is Paragraph 1 mainly about? A. Wild boars ……

not far from London Bridge. The summer had been dry – a hot east wind blew (刮风) and the fire spread (蔓延...’s people did after the Great Fire.B. How Wren helped rebuild London after the fire.C. Why Wren was buried ……

boars have caused trouble for people.D. Wild boars have caused trouble for people.2. Why are wild boars coming into towns?2. Why are wild boars coming into towns?A. The environment is getting worse ……

“socks”. But wild cats don’t have feet like these. Why do so many pet cats have..., making it look like the cat is wearing “socks”. But wild cats don’t have feet like ……

Uncovering facts behind rising ... (P6)Uncovering facts behind rising ... (P6)Choose the answer...” in paragraph 1 mean?A. Be allowed to do something.A. Be allowed to do something.B. No longer like ……

and SARS. Other wild animals like snakes and hedgehogs (刺猬) are also hosts of many viruses.There have been... and SARS. Other wild animals like snakes and hedgehogs (刺猬) are also hosts of many viruses.There have ……

, there were no casualties (伤亡). Wildfires can be very dangerous as they can spread quickly.On March 15... (伤亡). Wildfires can be very dangerous as they can spread quickly.How often do wildfires appear?How ……

’s deadliest (最致命的) viruses, such as Ebola and SARS. Other wild animals like snakes... the world’s deadliest (最致命的) viruses, such as Ebola and SARS. Other wild animals like snakes ……

Uncovering secrets of nature through videos Uncovering secrets of nature through videos 科普博主解密自然科普博主解密自然Many people like to learn natural history from books. But with the internet, some ……

the fire with water. Great! But all the books are wet. The computer doesn't work.Why not try 3M Novec 1230? It is a kind of specialliquid(液体). It looks like water and can put out fire quickly. But themagic ……

Like Fire. The theme song is now ranked 10th on Billboard’s Hot 100 chart. Why not check it out... noticed the theme song Just Like Fire from P!nk. P!nk is a 37-year-old famous American singer ……