2012职称英语理工A答案(试卷代号13)(17)

B are power stars like the sun.

C become massive and active

D are invisible to the WISE telescope.

五、补全短文

The Mysteries of Nazca

In the desert of Peru, 300 kilometers from Lima, one of the most unusual artworks in the world has mystified (迷惑) people for decades. ______F____ (46) But from high above, these marks are huge images of birds, fish, seashells, all beautifully carved into the earth.

The Nazca lines are so difficult to see from the ground that they weren t discovered until the 1930s, when pilots spotted them while flying over the area. In all, there are about 70 different human and animal figures on the plain, along with 900 triangles, circles, and lines.

Researchers have figured out that the lines are at least 1,500 years old, but their purpose is still a mystery. _____D _______(47) However, it would probably be very tricky to xxxxx and a spaceship in the middle of pictures of dogs and monkeys.

In the 1940s, an American explorer named Paul Kosok suggested that the drawings are a chronicle (记录) of the movement of the stars and planets.______C____ (48) xxxxx an astronomer tested his theory with a computer, but he couldn t find any relation between the lines and movements in space.

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