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Humans have yet to explore the deep wonders of the sea, but a recent find suggests aliens may have already beaten us to it.

Deep below the Pacific Ocean lies what one Martian researcher has taken as “a perfect pyramid”. Using Google Earth, this big structure appears to be 8.5 miles across and some say it could be a UFO parked underwater or a large alien base.

Marcelo Igazusta, a researcher in Argentina, was the first to lay eyes on the mysterious underwater structure, which was discovered last month. Using the coordinates 12°8'1.49 'N 119°35'26.39' W, Igazusta claims to have seen a beam of light shining from the darkness of the Pacific Ocean just west of Mexico—leading him to this discovery.

Well-known alien hunter, Scott C Waring, picked up the discovery today and shared it with his followers. “It’s a perfect pyramid that measures 8.5 miles across one side of its base,” Waring writes in his blog UFO Sightings Daily. “That's an underestimate. It could be up to 11 miles across.” Waring explains that this “perfect pyramid” is close to the ancient Mayan and Aztec pyramids in Mexico.

Although the ancient pyramids were built by humans, Waring says only aliens could make such a big structure, referring to the one underwater. “Even if this is not a UFO that landed in the ocean that was being used as an alien base, it is still an important discovery,” he writes. “An 8.5 mile pyramid... biggest the world has ever known.”

1.What lead Marcelo to find the underwater structure?

A A UFO.

B An alien.

C A beam of light.

D An alien hunter.

解析：选C。细节理解题。根据第三段第二句Using the coordinates 12°8'1.49 'N 119°35'26.39' W, Igazusta says to have seen a beam of light shining from the darkness of the Pacific Ocean just west of Mexico—leading him to this discovery.可知是一束光让Igazusta发现这一海底金字塔的，故选C。

2.Where did Warning share the discovery with his followers?

A On the radio.

B On the TV.

C On the Internet.

D In the newspaper.

解析：选C。细节理解题。根据第四段第二句“It’s a perfect pyramid that measures 8.5 miles across one side of its base,” Waring writes in his blog UFO Sightings Daily.可知Warning是在自己的博客上分享这一消息的，因此是在网上分享，故选C。

3.What does the underlined word “underestimate” mean in Chinese?

A 精算.

B 预估.

C 高估.

D 低估.

解析：选D。词义猜测题。根据前面的8.5 miles和后面的could be up to 11 miles对比可知有可能有11英里长，因此8.5英里是被“低估”了，故选D。

4.Which country does Mayan pyramid lie in?

A In Egypt.

B In Mexico.

C In Cuba.

D In India.

解析：选B。细节理解题。根据第四段最后一句Waring explains that this “perfect pyramid” is close to the ancient Mayan and Aztec pyramids in Mexico.可知玛雅金字塔在墨西哥，故选B。

5.Which of the following statements is TRUE?

A The underwater pyramid is bigger than other human-made pyramids.

B Warning is the first to report about the pyramid.

C The pyramid is used as an alien base.

D The underwater pyramid lies in the sea next to Mexico.

解析：选A。细节理解题。根据最后一段最后一句An 8.5 mile pyramid... biggest the world has ever known.可知这个8.5英里长的金字塔是世界上最大的金字塔，即比其他金字塔都大，故选A。