Scientists are uncovering the secrets of twin port cities lost under the waters of the Mediterranean Sea, a researcher said recently. Herakleion and Menouthis were rich and proud cities until something reduced them to rubble (碎石)and buried them in the mud beneath 30 feet of sea water, French underwater explorer Franck Goddio said at the American Geophysical Union conference. “This is a mystery that is ongoing,“ said Goddio, a founder of the European Institute of Marine Archeology (海洋考古学), a Paris-based underwater research organization backed by the wealthy Hilti Foundation of Liechtenstein (列支敦士登基金会). The destruction of the twin port cities has haunted Goddio ever since he happened upon the site about 15 miles from Alexandria while exploring sunken ships from Napoleon’s fleet. Goddio and his group of expert divers, marine archeologists and others, is using high powered vacuums, satellite navigation systems and sophisticated sonar (声纳) to excavate (挖掘) the sunken cities from underneath a carpet of silt about one meter (three feet) high. Walls of shops, remains of streets and gold artifacts have been found and recovered. Some experts believe that the port cities were destroyed by a series of massive earthquakes, much like the quakes scientists believe felled Troy (特洛伊城), Jericho and other ancient cities. The uniform direction of the collapsed columns and walls suggest an earthquake, Goddio said, but no fault lines have been found nearby. Other researchers believe a massive wave, caused by either an offshore earthquake or a distant underwater landslide, could explain the catastrophe. Still others think rising seas and a shift in the Nile River outlet doomed the cities. “The argument, as you can see, continues,“ Goddio said.

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Tom is a very______student, nice and polite towards his teachers as well as his schoolmates. respective respectful respectable respecting

The business is risky. But______. we succeed we would be rich. will would should must

I like watching TV______to the cinema. more than going than going rather than to go more than to go

______I admit that there are problems, I don’t think that they cannot be solved. Unless Until As While

The tape recorder______out of order, the students did not know what to do. was being has been was being

We can assign the task to______is capable and trustworthy. whom who whoever whomever

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Scientists are uncovering the secrets of twin port cities lost under the waters of the Mediterranean Sea, a researcher said recently. Herakleion and Menouthis were rich and proud cities until something reduced them to rubble (碎石)and buried them in the mud beneath 30 feet of sea water, French underwater explorer Franck Goddio said at the American Geophysical Union conference. “This is a mystery that is ongoing,“ said Goddio, a founder of the European Institute of Marine Archeology (海洋考古学), a Paris-based underwater research organization backed by the wealthy Hilti Foundation of Liechtenstein (列支敦士登基金会). The destruction of the twin port cities has haunted Goddio ever since he happened upon the site about 15 miles from Alexandria while exploring sunken ships from Napoleon’s fleet. Goddio and his group of expert divers, marine archeologists and others, is using high powered vacuums, satellite navigation systems and sophisticated sonar (声纳) to excavate (挖掘) the sunken cities from underneath a carpet of silt about one meter (three feet) high. Walls of shops, remains of streets and gold artifacts have been found and recovered. Some experts believe that the port cities were destroyed by a series of massive earthquakes, much like the quakes scientists believe felled Troy (特洛伊城), Jericho and other ancient cities. The uniform direction of the collapsed columns and walls suggest an earthquake, Goddio said, but no fault lines have been found nearby. Other researchers believe a massive wave, caused by either an offshore earthquake or a distant underwater landslide, could explain the catastrophe. Still others think rising seas and a shift in the Nile River outlet doomed the cities. “The argument, as you can see, continues,“ Goddio said.

If I (leave)______a little earlier, I would have caught the train.

They are all opposed to (put)______the meeting off.

People (live)______comfortably in the towns hardly feel the pleasure of living in the country.

After a medical examination, the doctor gave me a (favor)______report on my health.

______(surprise), he has passed the national entrance examination for graduate student;.

We appreciate the good quality of your products, but unfortunately your price appears to be on the high side.

No one was______in the accident. injured wounded suffered spoiled

The tenant must be prepared to decorate the property in accordance______the terms of the agreement. of with as like

Let’s invite everybody in the English Department to the party,______? will you can you must we shall we

Reading is to the mind______food is to the body. what that whose which

Not until a monkey is several years old______to exhibit signs of independence from its mother. it does begin when it begins does it begin before it begins

The reason why the two port cities disappeared under the waters of Mediterranean Sea is that______.

From the story we can draw a conclusion that______.

This article is probably from______.