职称英语等级考试综合类(B级)试题、答案及题解5

1、职称英语等级考试综合类 B 级 试题、答案及题解 5第二篇 Ancient Egypt Brought Down by FamineEven ancient Egypt s mighty pyramid金字塔builders were powerless in the face of the famine 饥荒 that helped bring down their civilization around 2180 BCNow evidence collected from mud deposited by the River Nile suggests that a shift in cl

2、imate thousands of kilometers to the south was ultimately to blame-and the same or worse could happen todayThe ancient Egyptians depended on the Nile s annual floods to irrigate their crops. But any change in climate that pushed the African monsoons季风 Southwards out of Ethiopia would have reduced th

3、ese floodsDeclining rains in the Ethiopian highlands would have meant fewer plants to stabilize the soil. W. 1len rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt , along with sediment沉积 from the White Nile .Blue Nile mud has a different isotope同位素signature

4、from that of the white Nile So by analyzing isotope differences in mud deposited in the Nile DeltaMichael Krom of Leeds University worked out what proportion of sediment came from each branch of the riverKrom reasons that during periods of drought， the amount of Blue Nile mud in the river would be r

5、elatively high He found that one of these periods， from 4500 to 4200 years ago. immediately came before the fall of the Egypt s old KingdomThe weakened waters would have been disaster for the Egyptians“Changes that affect food supply don t have to be very large to have a ripple波浪effect in societies，

6、 says Bill Ryan of the Lamont Doherty Earth Observatory in New YorkSimilar events today could be even more devastating， says team member DanielStanleya scientist from the Smithsonian Institution in Washington D C“ Aynthing humans do to shift the climate belts would have an even worse effect along th

7、e Nile system today because the populations have increased dramatically 36 Why does the author mention“sEmgiygphtty pyramid builders ?A Because they once worked miraclesB Because they were wellbuilt C Because they were actually very weakD Because even they were unable to rescue their civilization37

8、Which of the following factors was ultimately responsible for bringing down the civilization of ancient Egypt?A Change of climateB Corrulption C flood D Population growth 38 which of the following statements is true?A The White Nile is the trunk of the River Nile B The White Nile is the trunk of the Blue Nile C The White Nile is a branch of the Blue Nile D The White Nile is a branch of the River Nile 39 According to Krom ，the Egypts o1d Kingdom fellA immediately after a period of drought B immediately after a period of flood C just before a drought struckD just before a