求译文，求解析，请老师解析每个小题的选项为什么对或错

Each year on the first Saturday in March, a group of middle-aged men and a few women gather at sunrise on a beach near St. Petersburg, Fla. Above the high-water line are more than 50 small boats. At exactly 7 a.m. Steve Isaac stands at the water’s edge with his arm raised and yells: “Go!” Most of the boats are part of the Everglades Challenge. They head for a finish line many days and 300 miles to the south, at Key Largo. But this Saturday, for the first time, 10 of the brave mariners—including a journalist, whose progress will be available online—will compete in the world’s toughest small boat race, called the Ultimate Florida Challenge. Instead of finishing at Key Largo, the 10 boaters will continue around the state, heading north past Miami, the Kennedy Space Center, and Jacksonville, then down the Suwannee River, eventually passing most of Florida before arriving back at the beach near St. Petersburg. It will be 1,200 miles of head winds and burning sun. But it will also take the challengers through some of the most impressive scenery in North America. The rules are no-nonsense: First one back to the beach wins. The voyage must be completed within a month. Human power or sails, only. No motors. No rides in cars or tows from power boats. No help from family or friends. And at least once a day, participants are required to acknowledge by cell phone or radio that they are still alive. The race will be a replay of the tale of the tortoise and the rabbit. The trick, if there is one, is to be a tortoise and just keep moving forward. But the one-month deadline means that being too much of a tortoise may result in failure. So challengers have to be a little bit of a rabbit, as well. 72. What can we infer from the passage? A. People can watch the 1200-mile race on the net this year. B. Over 50 boats will take part in the 300-mile race this year. C. The racers cannot take a rest during the race. D. The winner will act as a tortoise in the race. 73. This year’s race is unusual because _____. A. more people will take part B. only men will take part C. it’s rules are meaningless D. it will be more challenging 74. According to the last paragraph, _____ is most important if one wants to win the race. A. strength B. courage C. equipment D. strategy 75. Which can be the best title for the passage? A. Around the coast in 30 days B. Among the life-and-death tests C. A new world record expected D. Everglades Challenge on line

解题思路： 如下
解题过程：
每一年在三月的第一个星期六，一群中年男人和一些妇女在日出时聚集在圣彼得堡附近的海滩，水面以上有50多个小的船。

在凌晨7点，史提夫艾萨克站在水边，他的手臂一举，喊道：“去了！“

看到的大多数船只是大沼泽地的挑战的一部分。他们向终点线行进很多天，要向南300英里，在Key Largo。但本星期六，第一次，10个勇敢的水手（包括记者，他的前进可以网上在线显示）将参加世界上最小龙舟赛，称为佛罗里达州的挑战赛。

不是在Key Largo结束，10名船员将继续围绕该地区，向北经过迈阿密，肯尼迪航天中心，杰克逊维尔，然后顺着Suwannee河，最终通过佛罗里达最后再回到圣彼得堡附近的海滩。

这将是1200英里的强风和烈日头。但它也将使挑战者通过美国北部最令人印象深刻的风景。

规则是没有废话：第一次回到海滩的赢。航行必须在一个月内完成。只有靠人力或帆。没有发动机。没有动力船车或牵引。没有家人或朋友的帮助。每天至少一次，参加者需通过手机或收音机，说明他们还活着。

比赛将是乌龟和兔子的故事重演。如果有，诀窍是做一只乌龟，只是不停地继续前进。但一个月的期限意味着时间太长，乌龟会失败。所以挑战者必须有一点像兔子。

最终答案：略