A
We are all fascinated by mysteries. To some extent we love to expect strange phenomenon occurring before us. Here are some amazing unsolved mysteries.
The Georgia Guidestones
On one of the highest hilltops in Elbert County, Georgia stands a giant granite monument (花岗岩纪念碑). Carved in eight different languages on the four giant stones are 10 Guides.
The origin of this strange monument is covered in mystery because no one knows the true identity of the man, or men, who constructed it. All we know is that in June 1979, a man identifying himself as R．C.Christian announced that he would build something to convey a message to mankind, but to date, no one knows who R．C.Christian really was.
Bermuda Triangle
The Bermuda Triangle is a triangular area of the Atlantic Ocean. Many planes, ships, and boats are said to have disappeared in this triangle without a trace, which led to the belief that “supernatural” forces exist in this area of the sea.
Could there truly be an unnatural force at work in this geographical triangle or are these disappearances merely coincidence? Either way, numerous people remain unwilling to step over the boundary line into the Devil's Triangle.
Loch Ness Monster
The Loch Ness Monster is a legendary animal that supposedly lives in the depths of Loch Ness, a long narrow lake located in rural Scotland.
Stories concerning the monster date back to the 6th century AD. Over the years thousands have reported seeing a long neck appearing from the water with a small head of an unknown creature. Pictures have even been taken of this “creature”， but most scientists refuse to believe any creature of this kind lives in the Loch Ness. So far, the evidence is inadequate, and the controversy continues.
【解题导语】 本文是一篇说明文。文章主要介绍了世界上三大未解之谜，包括佐治亚州的巨石阵、百慕大三角和尼斯湖水怪。
21．Why is the Georgia Guidestones mysterious?
A．It is on one of the highest hilltops in Elbert County.
B．There are eight different languages on the stones.
C．The person who built it remains unknown.
D．R. C. Christian could convey a message to mankind.
解析：选C 细节理解题。根据The Georgia Guidestones部分第二段内容可知，巨石阵很神秘是因为没有人知道是谁建造了它。故选C。
22．Why are people unwilling to enter the Bermuda Triangle?
A．It is too remote from land.
B．The chance of surviving is slim there.
C．There are supernatural forces in the area.
D．All transportations have disappeared there.
解析：选B 推理判断题。根据Bermuda Triangle部分第一段第二句可知，在百慕大三角经常有飞机、轮船和小船失踪；由此可推知，在百慕大三角人们幸存的可能性很小，所以许多人不愿意进入百慕大三角地带。故选B。
23．What can we know about Loch Ness Monster?
A．It existed in the 6th century AD.
B．It is said to have a long neck and a large head.
C．It has been living in Loch Ness Lake for a long time.
D．People haven't reached an agreement on its existence.
解析：选D 细节理解题。根据最后一段第一句可知，关于水怪的故事始于公元6世纪，并不是说水怪出现在公元6世纪，故排除A项；根据最后一段第二句中的“with a small head”可知，B项错误；根据最后一段倒数第二句可知，大多数科学家都不相信有这种水怪生活在尼斯湖中，故排除C项；根据最后一段最后一句可知，D项“人们对它的存在没有达成一致意见”符合原文。故选D。
