题目

下图是世界某区域经纬网图一，图中相邻两条经纬线的度数间隔都为10°。读图，完成下列问题。【1】图中甲、乙、丙、丁四个区域实地面积最小的是 A. 甲 B. 乙C. 丙 D. 丁【2】若①②间的距离、③④间的纬线长度分别为L1、L2则两者的大小关系是 A. L2>L1 B. L1＝L2 C. L1＝2L2 D. L1>L2 答案：【答案】【1】 D 【2】 B 【解析】【1】纬线长度由赤道向两极递减，任意纬线圈上经度差1°，其长度为111×cosα千米，图中丁地纬度最高，经度差1°的纬线长度最短，实地面积最小，D正确。【2】图中①②在同一经线上，纬度相差20°，两地间的距离L1为20°×111千米，③④在同在60°S纬线上，经度相差40°，阅读理解。     You have been working hard to learn English. Do you know American kids are trying to learn Chinese?  More than 60,000 American students now study Chinese.     "Because of China's fast development, Chinese has become more useful, and more and more  Americans begin to learn it," said Scott McGinnis, a Washington language expert (专家).     For example, in 1999, only three schools in Chicago had Chinese lessons. This year more than 30  schools there have Chinese during school days. Last year China gave them 3,000 textbooks because they  had done a good job.     Although Chinese is becoming more and more popular, it is one of the most difficult languages to learn.  Usually, an English speaker takes about 1,320 hours to become good at Chinese. He needs only 480  hours for French, Spanish or Italian.1. According to Scott McGinnis, more and more Americans begin to learn Chinese ______ .        A. because of China's fast development      B. because of China's interesting culture       C. because they have more free time    D. because Chinese is easy to learn    2. This year, ______ schools in Chicago give students Chinese lessons.    A. only three             B. thirteen    C. over thirty          D. less than thirty      3. The students at those schools in Chicago take Chinese lessons ______ .    A. after school    B. at weekends         C. on school nights        D. on school days4. Last year China gave ______  textbooks to those schools in Chicago.     A. thirty          B. three hundred    C. three thousand          D. thirty thousand5. From the last two sentences we know that ______ .    A. Chinese is easier to learn than French, Spanish or Italian     B. Chinese is more difficult to learn than French, Spanish or Italian       C. English speakers like to learn French, Spanish or Italian more than Chinese     D. English speakers like to learn Chinese more than French, Spanish or Italian