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2. 只有兩個奇數(shù)頂點。s picture on Mars when the first Chinese astronaut lands there. Period 4 Reading ,writing and learning tips Copernicus Prereading We know the first scientist is Copernicus. He was one of the first scientists to use mathematical observations to collect information. He believed the sun is the center of the universe and the earth and other plas went around it. The chart on shows his theory. Copernicus’ Revolutionary Theory Birth: February 19, 1473 Death: May 24, 1543 Place of Birth: Toruń, Poland Career: 14911494 Studied mathematics at Krak243。 Period 3 Listening and speaking 神舟 6號 神舟 6號 費俊龍聶海勝被授予英雄航天員榮譽稱號 神舟 6號 Qian Xuesen, who has made great contributions to the development of China’s space industry, is one of the bestknown scientists in China. His work has been very important for the development of China. Listen to the tape and fill in the blanks. Astronomer stars Mars Space industry rocket engineer America China design Build space flight satellites Land astronaut picture Father hero grades Answer the questions did Qian Xuesen study first? experience did he get in America that was very useful for China? Qian Xuesen first studied to be an engineer. In America he began to work on space rockets so that he was able to develop a space programme when he came back to China. was Qian Xuesen39。 1) But he became inspired when he thought about helping ordinary people exposed to cholera. 2) With this evidence John Snow was able to announce with certainty that polluted water carried the disease 過去分詞短語有時亦可用作非限制性定語,前后常有逗號。 This is a newlydeveloped device. 這是一個新開發(fā)的工具。 learning about language. 1.