Reading passages

285- It can be understood from the passage that, 
before the ancient trophies of Pedra Furada came 
to light, ------- .
A) north-eastern Brazil had never been inhabited
B) people believed that the first inhabitants of the 
American continents came either from Africa or from 
Australia 
C) it had always been assumed that the first people in 
the New World came from Siberia over a bridge of 
ice 
D) it was not suspected that the rituals of dancing and 
hunting went-back 12,000 years 
E) this area was already attracting tourists 
A recent study has confirmed that a huge flood 
occurred about 7000 years ago in the Black Sea. 
The theory was first put forward last year by 
marine geologists William Ryan and Walter 
Pitman. In their book 
Noah's Flood
, they claim 
that the great flood resulted from the last ice age, 
which peaked 12,000 years ago. When the poles 
froze, ocean levels dropped and cut off the 
Mediterranean from the Black Sea which dropped 
150 m. to become a lake with fertile shores. When 
the ice melted, the Mediterranean rose back up 
and broke through what is known as the 
Bosphorus with a force equal to 200 Niagara Falls 
for a period of two years. The Black Sea rose, 
consuming a mile of shore a day. Those who had 
settled there sailed away, spreading their stories 
of the flood.
 
286- According to the text, the poles froze during 
the last ice age which caused ocean levels to drop 
and ------- .
A) and they turned into fish farming zones 
B) the Black Sea became a lake of 150 m deep 
C) remain low for the next 7000 years 
D) so no further flooding on such a scale is likely 
E) the Mediterranean was separated from the Black 
Sea