B. Human's recognition of the Earth's surface.

C. The German scientist Alfred Wegener.

D. The early explorers' discovery.

42. Which of the following is true according to the passage?

A. We didn't see the Earth from far away until we saw the picture taken in the space.

B. Our ancient thought that the surface of the earth is still.

C. Alfred Wegener was not the first person to investigate the idea that the continents move.

D. The coastline of India and Africa fit together.

43. The last word of the third paragraph "tectonics" means "_______".

A. study of construction B. study of architecture

C. earth surface D. structural geology

44. What did the explorers find?

A. The coastlines of South and North America and Africa could fit together.

B. The coastlines of North America and Africa could fit together.

C. The east coastlines of North America and the west coast of Europe could fit together.

D. The coastlines of North America and India could fit together.

45. From ________,scientists began to understand the planet Earth is a living machine.

A. the 1960s B. World War One C. 500 years ago D. modern

　　　　 C

　TOKYO-------As Japanese shops run out of face masks amid the H1N1 flu outbreak, local authorities and bloggers are offering do-it-yourself tips on making masks from kitchen paper, coffee filters(过滤) and even sanitary pads.

The western city of Tatsuno now gives handy hints on its official website on fashioning a basic anti-flu mask from gauze, tissue and a pair of rubber bands. "We had many enquiries from people on what to do after they found no masks in the stores," said Hiroyuki Kobayashi, a disaster management official with the city's fire brigade.

The instructions, first posted last week, have since been used by the websites of other cities, Kobayashi said by telephone.

A private hospital in the central district of Niigata has meanwhile proposed a mask made from kitchen paper, while one blogger showed how to make a mask form textile and fine were and one made with coffee filters.

The latest edition of Aera Weekly, published by the Asahi Shimbun (朝日新闻)，carried an article in which a reporter tried on various types of homemade masks. The coffee-filter mask "looks like Donald Duck" but brought an unexpected "sense of security", the article said.

Japan has confirmed 342 cases of H1N1 virus, according to the Health Ministry. There have been no death reports in Japan and the government has said the spread of infections appears to be easing.