Welcome to the unit
In your opinion, what is the most beautiful thing one can experience? Why?
What have you known about Albert
Einstein? Why was he so great?
Einstein contributed more than any other scientist to the modern vision of physical reality. His special and general theories of relativity are still regarded as the most satisfactory model of the large-scale universe that we have. He solved lots of problems mysterious to us before…
Do you want to know his opinion of the most beautiful thing one can experience?
The most beautiful thing one can experience is mysteries . They are truly the basis of all arts and sciences .
------what kind of attitude should we adopt towards mysteries?
Have you ever heard of something not only interesting and attractive but also unexplained and unsolved by today’s science and technology?
The Bermuda Triangle
1.Do the four pictures have something in common? If so, what is it? 2.Can scientists explain these phenomena? 3.How do you feel about them?
? Example: They are mysterious because no satisfactory answers have been offered to explain them so far. Though these mysteries have puzzled people for a long time, they still show great interest in them. People feel puzzled by the mysteries…
? Example: UFO stands for Unidentified
Flying Objects, that is, objects, apparently moving in the sky, which we cannot identify. There are lots of reports about UFOs. Some say they are aliens visiting us in their spacecraft, and some say they are military test aircraft, while others say they do not actually exist. Since we have never seen one with our own eyes and there is no definite scientific explanation for it, we are not certain whether UFOs really exist, but we believe everything will be clear in the future.
What do the letters UFO stand for？ unidentified flying objects
Are they really from another planet?
Do you believe in UFOs? What might be the most acceptable explanation for UFOs? Aliens from space. Military test aircraft. Some UFOs are alien, some are test aircraft. UFOs are evidence of human space travel. UFOs are neither alien nor test aircraft. UFOs don’t exist.
The chances of seeing a UFO are greater for those people who live in small towns or in the country and are outside late at night. UFOs come in all shapes and sizes. Some are only small spots of light that move in strange patterns across the night sky Some can be seen in the daytime. They are often said to be disk- or saucershaped.
Yeti Abominable snowman
What do Yetis look like?
Half-man and half-beast
? The Yeti or Abominable Snowman, also called the “missing link” （推想中从类人猿 发展到人类之间的过渡生物）, is said to be a humanlike monster that is supposed to live in Himalayas, the highest mountain range in the world. Several sightings, mainly of footprints, have been reported by western explorers throughout the years. Yet none of them have been supported with evidence in any way.
? Area of standing crops that has been flattened in the form of a circle or more complex pattern. No general cause of crop circles has been identified although various natural and unorthodox explanations have been put forward; maybe many of the circles are known to have been hoaxes
Prehistoric monument on Salisbury Plain, southern England, consisting of two concentric circles(同心圆) of large standing stones, the heaviest of them weighing probably about 45 tons, one of the most famous prehistoric sites in the world, added to the UNESCO's list of World Heritage Sites in 1986, built between 2800 and 1500 BC , thought to have been an astronomical calendar(天文历) or a temple to the sun.
? What other unexplained things do you know about? ? If you saw a UFO or a Yeti, what would you do?