题目内容：

One new discovery after another has been over and over again plunging a hard-to-accept idea into scientists’ minds: there might have been an even more advanced super prehistoric civilization in the remote past.

Discovery One: Kept in Topkapi Palace, Istanbul, Turkey is a unique ancient map, which was first discovered in the 18th century. On the map, only the Mediterranean area is accurately mapped while other places, such as America and Africa, are well out of shape. When studying in a deeper way, however, the scientists were amazed at finding the ancient map was actually a bird’s-eye map. Compared with the pictures of the earth taken by the Apollo 8 spacecraft, the Turkey map is exactly the repeat of them and the deformable boundaries of America and Africa agree well with those of the Apollo 8’s pictures. To scientists’ astonishment, the map even describes the complex landforms of the Antarctic covered with several-kilometer- thick ice, which is as like as two peas with the map made by the 1952 Antarctica expedition with the help of the sonic echo sounder. But the old map was made in the remote ancient times!

Discovery Two: On the Lake Titicaca Plateau of South America lies the ruin of an ancient city, at the centre of which stands a huge red sandstone statue. Printed on it is a complete star map with hundreds of signs. Through years of study, scientists finally decoded the map and signs. This is a star map describing the starry sky 27,000 years ago. The signs record the extremely deep astronomic knowledge, which is even beyond the modern people’s understanding.

Discovery Three: In 1921, people happened to find an ancient Nied man’s skull in Zambia, Africa. In the right of the skull there is an edge-smooth round hole, which scientists have decided only a bullet can make. But the ancient Nied people lived about 70,000 years ago, when mankind is supposed to have just learnt to use axes.

Was there really a prehistoric super civilization? God knows!

1.The Turkey map was made in _______.

A. the 18th century    B. the 20th century    C. the 1950s    D. the remote past

2.What is the most important discovery of Discovery Two?

A. An ancient city.    B. A huge statue.    C. A star map    D. Astronomic knowledge.

3.The hole in the ancient Nied man’s skull suggests that the ancient Nied people _______.

A. could make something like guns

B. were very cruel

C. made much use of men’s skulls

D. could use axes skillfully

4.The author uses the three discoveries to prove that _______.

A. ancient people were much cleverer than present people

B. there might be a super civilization in the remote past

C. the ancient civilization might come from outer space

D. God made everything, including the super civilization