southwards out of Ethiopia would have reduced these floods. Declining 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 ...
The ancient metropolis of a once mighty race, the only permanent settlement in Eastern Africa, the reported seat of Muslim learning, a walled city of stone houses, possessing its independent chief, its peculiar population, its unknown language and its own coinage; the emporium of the coffee trad...
How does Ms. Lawrence respond ？（） A.She will renew her subscription for another year. B.She will only renew if she gets additional discounts. C.She wishes to cancel her subscription. D.She wants a lit...