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      SAT官方每日一题附答案和解析[数学](2020年7月3日)

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      Mathematics>Standard Multiple Choice

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

      A consumer-monitoring service wants to determine television viewing habits among 18- to 29-year-olds in a particular city. Which of the following survey methods is most likely to produce valid results?

      A.Select a random sample of 1000 18- to 29-year-olds in that city.
      B.Select a random sample of 1000 18- to 29-year-olds in that city who attended a computer camp when they were in high school.
      C.Select a random sample of 1000 18- to 29-year-olds in that city who played a varsity sport in high school.
      D.Select a random sample of 1000 18- to 29-year-olds in that city who played chess in high school.

      重点单词   查看全部解释    
      survey [sə:'vei]

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      v. 调查,检查,测量,勘定,纵览,环视
      n.

       
      involve [in'vɔlv]

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      vt. 包含,使陷入,使忙于,使卷入,牵涉

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      population [.pɔpju'leiʃən]

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      n. 人口 ,(全体)居民,人数

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      representative [repri'zentətiv]

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      adj. 代表性的,代议制的,典型的
      n. 代

       
      produce [prə'dju:s]

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      n. 产品,农作物
      vt. 生产,提出,引起,

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      unbiased ['ʌn'baiəst]

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      adj. 公正的

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      randomly ['rændəmli]

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      adv. 任意地,随便地,胡乱地

       
      sample ['sæmpl]

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      n. 样品,样本
      vt. 采样,取样

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      determine [di'tə:min]

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      v. 决定,决心,确定,测定

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      multiple ['mʌltipl]

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      adj. 许多,多种多样的
      n. 倍数,并联

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