题目

阅读理解。     阅读下列材料，从A、B、C、D四个选项中选出最佳答案。 John Smith was a good math student at a high school. He loved his computer. He came home early every day. Then he worked with it till midnight. But John was not a good English student, not good at all. He got an F in his English class. One day after school, John joined his computer to the computer in his high school office. The school office computer had the grades of all the students: the math grades, the science grades, the grades in arts and music, and grades in English. He found his Engl在学校运动会中测量跳高成绩时，应选取的合适的测量工具是:A. 分度值是1cm的15cm皮卷尺;　　 B. 分度值是1mm的1.5m钢卷尺;C. 分度值是1mm的米尺;　　　　　　　　 D. 自制一根分度值是1cm的硬杆长尺.