新SAT官方Daily Practise每日一题数学图表题

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Read the following SAT test question and then click on a button to select your

answer.

A biologist conducts a study regarding an invasive species, the Gupta fly, in

the city of Porto Alegre,Brazil. The flies were sampled from three different

parks in 2001 and 2002.

Frequency of Sampled Gupta Flies in Porto Alegre by Year

SAT官方Daily Practice 数学汇总，点击进入

Based on the information in the table, as a percentage, approximately what is

the probability that one of the sampled Gupta flies in 2001 was found in either

the Botanical Garden or Farroupilha Park?

A.33%

B.50%

C.67%

D.77%

重点单词：

invasive [in'veisiv] adj. 侵略性的;攻击性的

frequency ['fri:kwənsi] n. 频繁，频率

species ['spi:ʃiz] n. (单复同)物种，种类

calculate ['kælkjuleit] v. 计算，估计，核算，计划，认为

multiple ['mʌltipl] adj. 许多，多种多样的

probability [.prɔbə'biliti] n. 可能性，或然率，机率

approximately [ə'prɔksimitli] adv. 近似地，大约

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