- 默认语种:
- 播放器快捷键:
-
(F8:播放/暂停 F9:复读)
(F7:播放/暂停 F8:复读)
【科学60秒】透过鸵鸟看恐龙
听力简介:
文章较难,大家听写填空即可~
Sometimes it seems there's only so much we can learn about dinosaurs. We can't know what their coloration looked like, we can't watch them ____1____. We can only extrapolate from their remains. But now scientists say we can ____2____ a hint of dinosaur movement - from ostriches.
The giant, flightless birds still have feathered forelimbs that scientists assumed were now solely used for display and temperature regulation. But researchers from Germany and Belgium carefully observed hand-raised ostriches, and modeled their movement in the surrounding air streams. They found that ____3____ being useless in movement, the leftover wings help ostriches break quickly, turn, and zig-zag. The scientists presented their findings at the Society for Experimental Biology's annual conference in Prague.
Ostriches are descendants of dinosaurs, and the researchers liken ostrich movements to those of bipedal dinosaurs. Paleontologists had previously thought that some dinos' small forelimbs had served to catch insects or rip flesh. But this new research shows dinosaurs may have used their forelimbs to help with quickness, stability and ____4____. Further study in this field could lead to more accurate ideas of what it once looked like when dinosaurs went ____5____ their prehistoric landscape.
请在登录后才能看到内容!
请在登录后才能看到内容!
本文暂未收录注解!
参与沪友(已有58人听写,点击头像查看Ta的听写详情)
听写信息
生词本小D词典
相关网校
注意事项
- 听力练习标点符号不纳入正确率。
- 每天奖励上限为40沪元。
- 无听力原文时提交听写作为参考内容。
- 提交听写后根据正确率来奖励沪元。
- 获取听力mp3下载资源可选择相应下载方式。
- 程序校对,仅供参考,机器做不到人工智能,请大家谅解。