托福口语第四题

1.关于Task 4(出题模式)[对比Task 3]1051 时间：60’’～80’’2 形式：一人陈述3 内容：分论/案例4 作用：转述内容听力阶段准备阶段1 长度：75~1002 时间：40’’~45’’3 内容：课堂学术4 作用：背景信息阅读阶段回答阶段1 读并记录：总论+分论1 时间?+30’’1 快速审题2 结合笔记3 词汇替换1 时间60’’1 口语：模板句型+笔记词汇+时间调整1 听并记录：分论+案例 第四题的回答模板： 1. In this set of materials, the reading passage describes… .. (填入阅读短文的标题)and the listening passage is a lecture by a professor on the same topic. 2. According to the reading passage… . 3. In the listening passage, the professor goes on to demonstrate it by\ with two examples. The first one is … . And the second one is… . 母题一2009/1/10 Sampling Error Often, students or employees will be asked to draw a conclusion from a huge amount of data. That’s when a sample is introduced. When a sample is accurate, it can represent the whole group. But when it is wrong, sampling error would occur. In statistics, sampling error or estimation error is caused by observing a single sample instead of the whole population. Sampling error can be found by subtracting the value of a parameter from the value of a statistic. Generally, there are two methods of reducing sampling error: increasing the sample size, and ensuring that the sample can adequately represent the entire population. Sample Answer: The passage talks about a statistics term “sampling error”, which is caused by obversing a single sample instead of the whole population. If the sample is inaccurate, sampling error might appear. The lecture cited one experiment to illustrate the term. A researcher intended to conduct an experiment to calculate the amount of fish of different sizes in one pond. The researche...