A. he received a warm welcome

　　B. his literary road was not easy

　　C. he became famous for his unusual style

　　D. his poetic style was copied by other poets

　　33. What was Whitman’s greatest literary contribution?

　　A. He expressed human emotion in his writing.

　　B. He showed that flow of the sea in his poems.

　　C. He used slang to show his love for his country.

　　D. He created a unique rhythm and An American voice.

　　B

　　【贵州省铜仁市第一中学2017届高三上学期第一次月考】

　　Scientists around the world have been studying the warming of waters in the Pacific Ocean known as El Nino. The appearance of El Nino is known to affect the weather around the world. Scientists still do not completely understand it. Yet they now find they can use it to tell about the future in different areas of the world.

　　One example is the work of two scientists at Columbia University in New York, Mark Cane and Gordon Eshel. A scientist of Zimbabwe（津巴布韦）, Roger Buckland worked with them. They have found that when El Nino appears, Zimbabwe has little or no rain. This means corn crops in

　　Zimbabwe are poor. The last El Nino was in 1991 to 1993. That was when southeastern Africa suffered a serious lack of rain.

　　The scientists wrote about their recent work in the publication Nature. Their computer program can tell when an El Nino will develop up to a year before it does. They suggest that this could provide an effective early warning system for southern Africa, and could prevent many people from starving.

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