A、does
B、is going to
C、will
D、shall
A、25
B、312.5
C、625
D、156.25
A、analogy
B、alliteration
C、parallelism
D、metaphor
The Mesolithic, or Middle Stone Age, can seem a very remote and "mysterious" time. It started in about 10,000 B.C, as the last Ice Age ended. 62 northem Britainand everything north of this lying under vast ice 63 ,with so much water 64 up in the ice 65 sea levels could be 50m (160ft) _66_ those of today. What we now know as Britain was part of the European landmass in the Mesolithic Age, and was 67 to France and Denmark. And the shallow fishing grounds in the North Sea that are now known as the Dogger Bank were then a huge island.
But as the ice melted and retreated northwards, the seas 68 , just as they are doing today, and the newly shaped lands became covered first in arctic tundra and then in 69 mixed forests. Animals retumed to graze, and with the animals came people.
The people that retumed to these newly 70 lands were not settled farmers, but were hunters and gatherers. It is thought that they must have been 71 on the move in order to survive, searching for wild foods such as nuts and berries, and 72 wild animals for meat and skins. We 73 that since they were so 74 , they lived in temporary structures that were light easily dismantled (拆除) and 75 .
Unfortunately, if this is the case, there are unlikely to be many physical _ 76 for archaeologists to find. So, even though there are a few 77 in Britain and Scandinavia where 78 0f some sort have been found, all 79 can usually be 80 of a site where Mesolithic people lived is a scatter of finely worked and very 81 stone tools.
62.
A.Think
B.Imagine
C.Suppose
D.Presume
An international team of researchers used data collected from six sediment cores near the former ice shelf to show the shelf had been relatively intact for at least 10,000 years or since the last ice age.
The collapse therefore goes beyond what would be expected naturally at the time. Rather, the demise is likely the result of long-term thinning due to melting from underneath, as well as short-term surface melting from global climate change, the researchers suggest.
Then in five years, the shelf shrunk by 5,700 square kilometres, say scientists who found the break up caused changes in currents and species in the area.
"As the ice shelves are disintegrating, the glaciers that are feeding them from the land are surging forward," said Robert Gilbert, a geography professor at Queen's University in Kingston, Ont.
Glaciers are no longer being held back from the ice shelf, and are pushing icebergs into the sea, said Gilbert, one of the co-authors of the study in Thursday's issue of the journal Nature.
As the glaciers melt, global sea levels could change more than predicted, he said. Flooding could result in low-lying areas.
Scientists are now watching to see if the most southern part of the Larsen ice shelf, the coldest part of Antarctica. is going to break up.
The Larsen B ice shelf covered more than 3,000 square kilometers and was (36) meters thick until its northern part (37) in the 1990s. Three years ago, the central part also broke up.
An international team of researchers used data collected from six (38) near the former ice shelf to show the shelf had been (39) for at least (40) years or since the last ice age.
The (41) therefore goes beyond what would be expected naturally at the time. Rather, the (42) is likely the result of (43) due to melting from underneath, as well as short-term (44) from global climate change, the researchers suggest.
Then in five years, the shelf shrunk by (45) square kilometers, say scientists who found the break up caused changes in (46) in the area.
"As the ice shelves are disintegrating, the (47) that are feeding them from the land are (48) ," said Robert Gilbert, a (49) at Queen's University in Kingston, Ont.
Glaciers are no longer being held back from the ice shelf, and are pushing (50) into the sea, said Gilbert, one of the co-authors of the study in (51) of the Journal Nature.
As the glaciers melt, global sea levels could change more than (52) , he said. Flooding could result in (53) .
Scientists are now watching to see if the (54) of the Larsen ice shelf, the coldest part of (55) , is going to break up.
(36)
A、fewer work week
B、flexi work week
C、condensed work week
D、compressed work week
A、It is
B、There is
C、We are
D、There are
A、celestial phenomena
B、divination ritual
C、natural changes
D、ocean movements
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