The Nile

    The ancient Greek writer Herodotus once described Egypt-with some envy-as'the gift of the Nile'. The Egyptians depend on the river for food, for water and for life. The Ancient Egyptians were able to control and use the Nile, creating the earliest irrigation systems and developing a prosperous {#blank#}1{#/blank#}.

    Snaking through the deserts, the Nile would flood almost {#blank#}2{#/blank#} each year in June. Once the water subsided, a rich deposit of sand was left behind, making an excellent topaoil. Seeds were sown, yielding wheat, barley, beans, lentils and leeks. Drought could spell disaster for the Egyptians, so during the dry seasons, they dug basins and channels to deliver water to their land. They also devised simple channels to transfer water at the peak of the flood.

    An early system of {#blank#}3{#/blank#} a Nilometer, was used to de determine the size of the floods. Later, during the New Kingdom, a lifting system called a shaduf was used to raise water from the river--{#blank#}4{#/blank#} to the way in which a well is used today.

    The Egyptians took up some of the earliest trading missions. Without a(n) {#blank#}5{#/blank#} system they exchanged goods, bringing back timber, precious stones, pottery, spices and animals. Their efforts in medicine were also {#blank#}6{#/blank#} advanced: surgeons performed operations to remove cysts(囊肿). Mummification gave them great understanding of the human body-yet they also relied heavily on various medicines to prevent disease, and discoveries were often confused with superstition(迷信). And while a great deal of time was dedicated to {#blank#}7{#/blank#} the Egyptians thought the stars were gods.

    By the 16th century Egypt was under the Ottoman Empire until Britain seized control in 1882. What is now mostly Arabic Egypt only won {#blank#}8{#/blank#} from Britain after World War Ⅱ. The Suez Canal, opened in 1869, {#blank#}9{#/blank#}the country as a center for world transportation. But it, and the completion of the Aswan High Dam in 1971 {#blank#}10{#/blank#} the ecology of the Nile, which now struggles to satisfy the country's rapidly growing population, currently more than 76 million-the largest in the Arab world.

    The elementary means of communicating with other people is conveying messages by voice. This fact is widely acknowledged and we recognize the voice as a(n) {#blank#}1{#/blank#} characterizing the identity of a person. The array of voices is immeasurable as no two are exactly similar. They can be nasal, resonant or shrill produced in accordance with the individual physical {#blank#}2{#/blank#} of the throat.

    One possible implementation of the {#blank#}3{#/blank#} of voice recognition is voice profiling used by police analysts as a method of substantiating court evidence in trials. Every year, thousands of audiotapes with recorded interviews or {#blank#}4{#/blank#} utterances are put to the purpose to help identify the probable {#blank#}5{#/blank#}. Specialists dealing with the voice investigation claim that people can give themselves away by their {#blank#}6{#/blank#}, inflections or other voice attributes like pitch, intensity and loudness. A recorded sample is usually {#blank#}7{#/blank#} into electric impulses and later transformed into a pictorial recoding which is processed by a computer program. Very frequently voice analyst have a stake at deciphering the relevant information which may be {#blank#}8{#/blank#} with background noise or other interfering sounds until they attain the {#blank#}9{#/blank#} results.

    Thankfully, these efforts help the police detect individuals who threaten their victims by phone or inform about bomb {#blank#}10{#/blank#} or those who make offensive calls disturbing the peach of decent citizens.

    Do you like to play with kids?{#blank#}1{#/blank#}Easter Day(复活节), students at Nazareth Academy in Texas, US, got a{#blank#}2{#/blank#}to play with kindergarten kids.

    Easter Day was on March 27 this year. It's a{#blank#}3{#/blank#}festival in western culture. Each student paired with a kid. They did crafts(手工作品), had an Easter egg hunt(寻找彩蛋活动) and did other activities to celebrate. The school{#blank#}4{#/blank#}this activity.

    They spent a lot of time{#blank#}5{#/blank#}kindergarten kids how to make Easter arts and crafts. Mitul Agarwal, 14, an eighth-grader, taught his partner Ruben Gonzalez how to use scissors(剪刀){#blank#}6{#/blank#}paper. This 5-year-old boy tried to get the scissor cuts{#blank#}7{#/blank#}while Mitul sat next to him to help.

    "Working with little kids is{#blank#}8{#/blank#}. We do a lot of{#blank#}9{#/blank#}about teamwork," Mitu told the Victoria Advocate, a local newspaper. "We teach them things that we know. And we{#blank#}10{#/blank#}about things that they know."