阅读文章，回答下列问题：1. When you whistle to the birds, what will they do?2. How high can the racing car fly?Answers: 1. The birds will sing. 2. The racing car can fly up to 60 meters. ……

信不信由你
Can birds fly backwards (向后)? Only hummingbirds (蜂鸟) can. ……

Can birds fly backwards? Only hummingbirds (蜂鸟) can. ……

信不信由你
Bats (蝙蝠) can fly. Are they birds? No, they are mammals (哺乳动物). ……

Hummingbirds (蜂鸟) are the only birds in the world that can fly backward. ……

’t raise young birds, either. They lay (下蛋) their eggs in other birds’ nests.How do they do...’ enemies (敌人). When other birds hear the sound, they become scared and fly away. The cuckoos then go ……

cent of a migrating bird'sweight(体重).Migration is hard for birds. Some fly across seas to get where they're going. But no matter how far they fly, birds seldom get lost. What are the secrets ……

have sad results. Some birds die because they get too tired to fly, and some fly into the buildings.... Many birds cannot live in the cold, so they fly to warmer places in the south. But there are other ……

know the different kinds of birds? Bird watching is a popular hobby for many British people. But how... find in the book. Your knowledge (知识) of birds will fly as high as birds! ……

Can you help the baby birds out of thenest(鸟巢) so they can fly? ……

Q: Why do birds fly south (向南方) for the winter?A: Because it's too far to walk! ……

at other kinds of birds, scientists like Speakman are beginning to find out why penguins can’t fly...企鹅为什么不会飞？词数 270 建议阅读时间 7分钟课件及教案见网站 测试见7版WE have all looked up at birds and wished that, like them ……

? No doubt, it’s their ability to fly.However, the fact is that not all birds can fly – ostriches (鸵鸟... it can fly. However, its DNA says otherwise – the tinamou is in fact related to flightless birds ……

词数 375 建议阅读时间 8分钟 教案和课件见网站 测试见7版为什么不是所有鸟都会飞？WHAT makes birds so special compared to other animals? No doubt it’s their ability to fly. But come to think of it, not all birds can fly – ostriches (鸵鸟 ……

Flying high鸟儿到底能飞多高?Q: How high can birds fly?A:According to Guinness World Records, avulture(秃鹰... bird was hit by a plane at this height.Bar-headed geese(斑头雁) are probably the birds that fly highest ……