. changing capitals is good for every countryDAY 4Tails can help the elderly (P6)Choose the answer.... how tails help animalsC. the importance of helping old peopleD. how old people can use the robotic ……

help the animals grab (抓住) things. Animals can use their tails like an extra (额外的) arm. For example, some monkeys can grab tree branches with their tails. Birds use their tails to direct (指示 ……

scientists want to bring tails back. They made a robotic (机器的) tail. It can help old people keep... and other things.Dog and cat tails show their mood (情绪).How does it work?The robotic tail can move like ……

① _________ of tail can help the animals catch and hold things. Animals can use their tails like... tails help birds do?4. What can tails help birds do ……

people, some of whom have balance problems and can’t walk steadily. This tail can help them get...Through evolution, our human ancestors developed more intelligence but slowly lost their tails. Now ……

信不信由你Some fish can taste (尝味道) with their tails. ……

人类又要重新“长出”尾巴了吗？PAGE 6Although many mammals have tails, humans have not had them for millions of years. But now, to help those who are in need, technology will let humans “grow” tails again. ……

人类将重获尾巴？人类将重获尾巴？Can people have tails (尾巴)? Yes. Scientists at Keio University in Japan have built a robotic (机械的) tail. It can help old people keep their balance. The tail is 1 meter long ……

. Some of them can’t walk steadily (平稳地). This tail can help them get around. The development team...人类将重获尾巴？Why don’t humans have tails (尾巴)? Millions of years ago, humans did have tails, but we ……

. A. To make a new type of smartphone. B. To write a guidebook for the elderly. B. To write a guidebook for the elderly. B. To write a guidebook for the elderly. B. To write ……

people, Japan has introduced robots to help with the job. For example, cleaning robots can wash dishes, prepare simple meals or tidy up elderly people’s homes. Communication robots can chat with elderly ……

Young, a Beijing-based NGO, aims to help China’s elderly use mobile services. College student..., a Beijing-based NGO, aims to help China’s elderly use mobile services. College student volunteers ……

and Africa. There're many kinds of squirrels but most have large tails. Long tails help them balance..." with other squirrels. In cold weather, tails can keep squirrels warm.Many squirrels build their nests (窝 ……

. It is happily having lunch. You can only see wombats in Australia. They are usually 1 meter long, with short tails (尾巴). They eat grass and fruit. 21ST ……

are rectangular (长方形的)! This special shape helps goats see everything around them. They can even see their tails... are rectangular (长方形的)! This special shape helps goats see everything around them. They can even see ……