题目

一辆汽车从静止开始由甲地出发，沿平直公路开往乙地。汽车先做匀加速运动，接着做匀减速运动，开到乙地刚好静止，其速度图像如图所示。那么，在0~60秒和60秒~180秒两段时间内位移大小之比为__________；平均速度之比为__________。 答案：【答案】1:2 1:1 【解析】[1]．在0~60秒和60秒~180秒两段时间内位移大小之比为；[2]．平均速度之比为综合填空。用方框中所给单词的适当形式填空。将答案写在答题纸的相应位置。(10分)Everything common simple memory mind withremember regard Strict growHe is the first premier (总理) of the new China. But he had only 5, 100 yuan in savings at the end of his life. He had no children. But billions of Chinese 1. themselves as his children.This year is the 112th anniversary (周年) of Premier Zhou Enlai’s birth. People hold all kinds of activities in 2. of this great man.Zhou was born in a middle-class family in Jiangsu Province. As he 3. up, he saw how foreign countries bullied (欺负) the Chinese. At the age of 12, Zhou made up his 4. to “Study for the rise of China.” After that, he gave 5. to his country.In 1949, Zhou was premier of the country with the most people. Though he was a top leader, he continued to lead a 6. life and saved every fen to help his people.“Premier Zhou worked 18 hours a day dealing 7. all kinds of business around China. It was very 8. to see him eat just a bowl of noodles as a meal and sleep in a wooden chair in his office,”said Guo Jiading, a former (以前的) government official.Officials close to him still 9. his old clothes and suitcase. They say he never left a single grain (饭粒) of rice at a meal. “The Premier was 10. with himself. But he often used his own money to help others,” said his former secretary Zhao Wei. “He is a person who gave all his love to his people and they loved him in return.”