法国游乐园“聘请”乌鸦当清洁工。Cleaners (清洁工) help to keep cities clean. This month, a park in France welcomed six very special cleaners. They are crows (乌鸦)! Workers at the park have taught the crows to pick up ……

a week at a park in France. “The birds are able to do something that we are much more able to do than...乌鸦清洁工现身法国。A group of crows pick up small pieces of trash from the ground and throw them into a box ……

. There is almost no bird living in Antarctica.D. Birds can help clean the environment.D. Birds can help clean the environment.2. How can cigarette butts “help” birds?2. How can cigarette butts “help ……

: they have to give up their “hairs” to keep themselves clean. Vultures eat the dead. When...;. Vultures help to keep the environment clean! Eating dead bodies stops the spread (传播 ……

乌鸦清洁工上岗啦！A French park has six new workers. They are crows! They fly around and pick up cigarette butts (烟头) and garbage (垃圾). They help keep the park clean this way. Good paymentOf course, the crow ……

. How clever!This picture was taken at Phoenix Park in Dublin, Ireland. Jackdaws are common in Europe...聪明寒鸦拔鹿毛筑巢。聪明寒鸦拔鹿毛筑巢。Most birds make their nests (巢) out of twigs (小树枝). But the jackdaw  (寒鸦 ……

living in AntarcticaC. there are almost no birds living in AntarcticaD. birds can help clean the environmentD. birds can help clean the environment2. How can cigarette butts “help” birds?2. How can ……

to give up their “hairs” to keep themselves clean. Vultures eat the dead. When they eat... like other birds. They often “hiss (发出嘶嘶声)”. Vultures help to keep the environment ……

Clever birds save energy为什么大雁会排成"人"字？Q: Why do geese fly in a V-shape?A:According to a recent study....The geese use the aircurrents(气流) created by the birds in front of them to fly more easily ……

一起观鸟吧！“What’s that flying in the sunny sky?” Sometimes we look up and see birds flying. But do you know the different kinds of birds? Bird watching is a popular hobby for many British people. But how ……

became interested in birds. Now, this 14-year-old from the United States has his own group called Protecting Our Birds. He runs a website to teach people about birds and how to help them. For the last ……

person concentrates on (致力于) a certain issue. As for me, I will stick to saving paper to help reduce... classified waste into different bags, take part in tree planting and save water. Do not give up ……

of times? To better protect (保护) birds and help them, some Suzhou students made nests by themselves with waste materials (废弃材料). They put the nests on the trees in a park. They hoped that soon birds would ……

to local plants and animals. They help keep the air and water clean.The five parks’ protected land... to local plants and animals. They help keep the air and water clean.The five parks’ protected land ……

the trash by herself, and soon, people around her joined in to help! After the clean-up, she asked her...! After the clean-up, she asked her grandpa to take her to the park authority (管理机构) to talk about ……