# SAT官方每日一题附答案和解析[数学](2019年12月25日)

Mathematics>Standard Multiple Choice

Engineers at a theme park are recording the speed of a roller coaster as it travels over a particular hill. The graph shown above in the ds-plane represents the relationship between s, the speed of the roller coaster, in meters per second, and d, the distance along the track from the base of the hill, in meters. What is the best interpretation of the s-intercept marked on the graph?

A.The hill is 25 meters high.
B.The roller coaster has a speed of 25 meters per second at the base of the hill.
C.The roller coaster has a speed of 25 meters per second at the top of the hill.
D.When the roller coaster is 25 meters from the base of the hill, its speed reaches 0 meters per second and stops.

 重点单词 查看全部解释 interpretation [in.tə:pri'teiʃən] 想一想再看 n. 解释，阐释，翻译，(艺术的)演绎 base [beis] 想一想再看 n. 基底，基础，底部，基线，基数，(棒球)垒，[化]碱 track [træk] 想一想再看 n. 小路，凯旋门招商总代：跑道，踪迹，轨道，乐曲v. 跟踪 particular [pə'tikjulə] 想一想再看 adj. 特殊的，特别的，特定的，挑剔的n. 联想记忆 recording [ri'kɔ:diŋ] 想一想再看 n. 录音 动词record的现在分词 联想记忆 multiple ['mʌltipl] 想一想再看 adj. 许多，多种多样的n. 倍数，并联 联想记忆 theme [θi:m] 想一想再看 n. 题目，主题 graph [grɑ:f] 想一想再看 n. 图表，示意图vt. (以图表)表示
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