The most beautiful thing one can experience is mysteries. They are truly the basis of all arts and sciences. Albert Einstein

Here are some pictures on the screen. Can you tell me what they are?

UFOs : unidentified flying objects The chances for 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 are often disk- or saucer-shaped.

2001 年 12 月 26 日傍 晚 5 时 04 分 杭州 2005 年 1 月 5 日清晨 7 点 30 分北京 2005 年 11 月 5 日在永康 大寒山

Do you think such kind of things mysterious? Are you curious about them? Besides UFOs, can you list anything more unexplained you’ve ever heard or seen in your daily life?

Have you heard stories about these things?

Himalayas the highest mountain range in the world Yeti Abominable Snowman Half-man and half-beast

Loch Ness the largest of a series of interlinked lochs, or lakes, located in northern one of Scotland’s top tourist attractions. Lock Ness Monster

Stonehenge prehistoric monument on Salisbury Plain, southern England, consisting of two concentric circles of large standing stones. It was built between 2800 and 1500 BC and is thought to have been an astronomical calendar or a temple to the sun.

The Sphinx Half human, half lion, the Sphinx is 240 feet long and 66 feet high Pyramids, Egypt

How Wide The base of the Great Pyramid is a square with each side measuring 230 m (756 ft) and covering an area of 5.3 hectares (13 acres). How much is that? Imagine a football field. Nearly 10 football fields could fit within the base. The area of the base is also equal to about seven city blocks in New York City.  If you were to walk around the base, about how far would you walk? A. 500 m (1,640 ft)500 m (1,640 ft) B m (6,069 ft)1850 m (6,069 ft) C. 920 m (3,018 ft)920 m (3,018 ft)

How Tall At m (481 ft) high, the Great Pyramid stood as the tallest structure in the world for more than 4,000 years. Today it stands at 137 m (449.5 ft) high, having lost 9.5 m (31 ft) from the top.

How Heavy? More than 2,300,000 limestone and granite blocks were pushed, pulled, and dragged into place on the Great Pyramid. The average weight of a block is about 2.3 metric tons (2.5 tons). How much is that? Well, you can think of it in terms of refrigerators. An average refrigerator weighs about 91 kg. If 1 metric ton = 1,000 kg, how many refrigerators equal a 2.3-metric ton block? A. 25 refrigerators25 refrigerators B. 5 refrigerators5 refrigerators C. 90 refrigerators90 refrigerators 

For a pyramid to look like a pyramid, each of the four triangular-shaped sides must slope up and towards each other at the same angle so that they meet at a point at the top. The builders constructed the pyramid layer by layer, starting at the bottom. They had to check their work often, for even a tiny error at the bottom could grow into a very large error by the time the workers reached the top! How Steep? Each side of the Great Pyramid rises at an angle of 51.5 degrees to the top. Not only that, each of the sides are aligned almost exactly with true north, south, east, and west.

2. If you saw a UFO or a monster some day, what would you do? Group discussion 1. Do you believe in unexplained things mentioned above? Why or why not?

mystery 神秘, 神秘的事物, 谜 他是怎样进去的是一个谜。 How he got in is a mystery. 谁把书拿走了？这是个谜。 Who has taken the book? It is a mystery. 世界上有太多解不开的谜。 There are too many unexplained mysteries in the world.

advanced (adj.) 高级的, 年老的, 先进的 advanced teaching methods 先进的教学方法 a person of advanced age 年迈的人 the advanced education 高等教育 advanced mathematics 高等数学 advanced studies 高深的研究 advanced ideas 先进的思想

run into 跑进, 撞上, 偶遇, 陷入, 达到 昨天我在街上碰见十年未见的老朋友了。 I ran into an old friend yesterday in the street, whom I hadn’t seen for 10 years. 那天他撞到另外一辆车的车尾了。 He ran into the back of another car the other day.

run 相关短语： run across 偶然碰到 run after 追逐，追捕 run away 逃跑 run for 竞选 run into 偶然碰到（困难）遇见 （人），相撞 run out of 用完 run out 用完

1) If you drive so fast, you'll _________ someone some day. 2) I __________ a friend of mine in the exhibition yesterday. 3) Our water has __________. Can you fill up some more bottles? 4) Why do you always __________ adventure? 5) He didn't want to ___________ president that year. 6) In that way you will only __________ difficulties. (run into, ran across/into, run out, run after, run for, run into)

Translate the following phrases: 1. 充满神秘 2. 先进的科学与技术 3. 一艘沉船 4. 相信未解之谜 5. 偶遇一个飞碟 be full of mysteries advanced science and technology a sunken ship believe in unexplained things run into a UFO

Surf the internet and learn more about world mysteries. Prepare a short speech to introduce something that interests you.