外研版 (2019)选择性必修 第四册Unit 5 Into the unknown教学ppt课件

1．There is a profound charm in mystery.

神秘事物具有深奥的魅力。

2．There is no science that is completely divorced from life.

没有一种科学是同生活绝对脱离的。

3．He had lived long enough to know it is unwise to wish everything explained.

长期的生活经历足以使他懂得要想把一切都解释清楚是不明智的。

4．How the pyramids were built has been a mystery for thousands of years.

几千年来，金字塔是如何建造的一直是个谜。

5．Imagination is more important than knowledge, for knowledge is limited while imagination embraces the entire world and is the source of knowledge evolution.

想象力比知识更重要，因为知识是有限的，而想象力概括着世界上的一切，并且是知识进化的源泉。

Stonehenge is a ring of standing monoliths(单块巨石)－giant stones.Scientists said Stonehenge was first used as a burial mound(坟冢)．The monoliths also came from the Preseli Mountains.Scientists were not sure how the ancient people transported the giant stones the 160 kms to their site in Stonehenge.They now believe the people who are buried at Stonehenge helped transport, position and erect the stones.Researcher John Pouncett said，“People from the Preseli Mountains not only supplied the bluestones(蓝灰砂岩)used to build the stone circle but moved with the stones and were buried there too.”

Mike Taylor，a university student in the study of prehistoric life forms for his Ph.D.，discovered a brand new species of dinosaur，while conducting research at the Natural History Museum in the United Kingdom.This new species was identified as part of the sauropod family of dinosaurs.The sauropods were four­legged，vegetarian dinosaurs，with very long necks and tails，and relatively small skulls and brains.One of their most unusual characteristics was their nostrils，which were higher up in their head，almost near the eyes.So far，the sauropod bones have been found in every continent except Antarctica，and they are one of the longest living group of dinosaurs，spanning over 100 million years.This new species，named Xenoposeidon proneneukos，which means forward sloping，lived about 140 million years ago.

Mike Taylor，who has spent five years studying sauropod vertebrae，immediately knew that this was the backbone of a sauropod.However，he had never seen one like this before.Further research proved this was indeed a new kind of sauropod.The bone，which had been discovered in the 1890s，had never been examined.

[探究发现]

1．Find out the main idea of the passage.

Mike Taylor discovered a brand new species of dinosaur.

2．Find out the new dinosaur's most unusual characteristic.

Nostril.

3．Find out the time that the bone was discovered.

In the 1890s.