Unit5 Understanding ideas 基础知识梳理（背诵版+默写版）2025-2026学年外研版英语八年级下册

Unit5 Looking into nature Understanding Ideas 基础知识背诵 1. 想象在一片古老森林的一只恐龙。 Imagine a dinosaur in an ancient forest. 2. 数百年来，人们一直认为恐龙看起来像巨大的蜥蜴。 For hundreds of years, people believed that dinosaurs looked like huge lizards. 3. 然而，由于一块琥珀，科学家们现在知道这种观点是错误的。 However, thanks to a piece of amber, scientists now know that this idea is wrong. 4. 它们也帮助我们理解地球上的生命一直在变化。 They also help us understand that life on earth has always changed. 5. 这个物种不再在这个地区生长。 This species no longer grows in this area. 6. 未来，琥珀或许还能帮助我们发现是否其他物种随时间发生了变化。 In the future, amber may also help us discover if other species have changed over time. 7. 多亏了琥珀，300多种未知物种已被发现。 Thanks to amber, more than 300 unknown species have been discovered. 8. 科学家们过去认为，蚂蚁来自地球的北半球。 Scientists used to believe that ants came from the northern half of the earth. 9. 这种非洲物种的发现改变了关于蚂蚁历史的旧有观点。 The discovery of this African species has changed old beliefs about the history of ants. 10. 作为通往过去的一扇窗，琥珀已被深入研究。 As a window on the past, amber has been much studied. 11. 然而，它仍未被完全了解。 However, it's still not fully understood. 12. 我们应该投入更多精力进行研究。 We should put more effort into research. 13. 然后我们就能用这把“钥匙”解开更多大自然的秘密。 Then we can use this key to unlock more secrets of nature. Unit5 Looking into nature Understanding Ideas 基础知识默写 1. 想象在一片古老森林的一只恐龙。 ______________________________________________________ 2. 数百年来，人们一直认为恐龙看起来像巨大的蜥蜴。 ______________________________________________________ 3. 然而，由于一块琥珀，科学家们现在知道这种观点是错误的。 ______________________________________________________ 4. 它们也帮助我们理解地球上的生命一直在变化。 ______________________________________________________ 5. 这个物种不再在这个地区生长。 ______________________________________________________ 6. 未来，琥珀或许还能帮助我们发现是否其他物种随时间发生了变化。 ______________________________________________________ 7. 多亏了琥珀，300多种未知物种已被发现。 ______________________________________________________ 8. 科学家们过去认为，蚂蚁来自地球的北半球。 ______________________________________________________ 9. 这种非洲物种的发现改变了关于蚂蚁历史的旧有观点。 ______________________________________________________ 10. 作为通往过去的一扇窗，琥珀已被深入研究。 ______________________________________________________ 11. 然而，它仍未被完全了解。 ______________________________________________________ 12. 我们应该投入更多精力进行研究。 ______________________________________________________ 13. 然后我们就能用这把“钥匙”解开更多大自然的秘密。 ______________________________________________________ Unit5 Looking into nature Understanding Ideas 基础知识练习 Imagine a dinosaur in an ancient forest. It is running around, 1.________(look) for its next meal. With an angry cry, it opens its mouth, raises 2.________(it) beautiful feather-covered arms, and… Wait, feathers on a dinosaur? For 3.________(hundred) of years, people believed that dinosaurs looked like huge lizards. Just look at all those 4.________(dinosaur) in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they 5.________(find) the tail of a dinosaur – with feathers. 6.________(this) beautiful golden stones quietly keep pieces of the past. They can tell us whether dinosaurs had feathers, but that's not all. They also help us understand that life on earth has always changed. A piece of amber from Northern Europe, for example, holds a flower. This species no longer grows in this area. But the find 7.________(prove) that it did 35 million years ago. In the future, amber may also help us discover if other species have changed over time. Thanks to amber, more than 300 unknown 8.________(species) have been discovered. In a piece of amber from Africa, scientists found 13 9.________(ant). Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of 10.________ earth. The discovery of this African species has changed old beliefs about the history of ants. Who knows whether this piece of amber will tell us more secrets? As 11.________ window on the past, amber has been much 12.________(study). However, it's still not fully 13.________(understand). We should put more effort into research. Then we can use this key 14.________(unlock) more 15.________(secret) of nature. 答案： 1.looking,2.its,3.hundreds,4.dinosaurs,5.found,6.These,7.proves,8.species,9.ants,10.the,11.a,12.studied,13.understood,14.to unlock,15.secrets 学科网（北京）股份有限公司 $