题目

Hangzhou ________ as the City of Silk. Tourists like shopping for silk there.A. knows B. is known C. was known D. will be known 答案：【答案】B【解析】句意：杭州以丝绸之城而著名，游客喜欢在那里买丝绸。主语Hangzhou是动词know的承受者，表达的是客观事实用一般现在时的被动语态，其构成为am/is/are+过去分词，故答案是B。作图题：将△ABC平移后，A点移到A1点，请作出平移后的图形，并将此图形绕点C1逆时针旋转60°，再作出所得图形．