TPO (TOEFL Practice Online) 是美国教育考试服务中心(Educational Testing Service，简称ETS)专为参加托福TPO27口语Task4答题技巧及模版：
题目：
Read a passage from a biology textbook. You will have 50 seconds to read the passage. Begin reading now.
Swarm Intelligence
Some insect species live in large groups, or “swarms.” Such swarms typically include several thousand individual insects. Living in swarms allows these insects to accomplish complex tasks together through complex behaviors. The behavior of the insects as a group demonstrates a greater level of complexity than the behavior of individual group members. This complex group behavior is called swarm intelligence. With swam intelligence, each insect performs a simple instinctual behavior that is repeated by other individuals that results in a complex behavior. Insect swarms are able to accomplish tasks that individual insects would not be able to achieve.
Now listen to a lecture on this topic in a biology class.
Explain how the example from the lecture illustrates the concept of swarm intelligence.
1、题目关键词：explain the example, the concept
2、答题要领：
(1)briefly state the main idea of the reading passage
(2)concentrating on the idea given by the professor. When orally summarizing the lecture, test takers are supposed to include the main points and some examples as well.
3、阅读材料要点：
(1) Some insect species live in large groups, or “swarms.”
(2) The behavior of the insects as a group demonstrates a greater level of complexity than the behavior of individual group members. This complex group behavior is called swarm intelligence.
4、听力材料要点：
(1) Ants live in large groups called “colonies”.
(2) They always move together to get to food sources.
(3) If the food is in another branch where there is a gap between it and the branch they are at, the first ant will stretch its body in the open space, the other ants will follow its lead.
(4) Finally, they will form a bridge of ants. And the other ants can cross it to get to the food.
5、模板：
(1) In this set of materials, the reading passage is (the title of the reading passage) and the listening material is a lecture by a professor on the same topic. 当然，如果你觉得你的听力材料的理解率很高也不用谈及阅读材料中的内容。只是第一段说起来实在太easy了。
(2) In the reading passage, it introduces a concept called…
(3) In the lecture, the professor… 不但要包括观点而且要包括教授所给的例子。
网老师提醒：用TPO作为托福备考教材和练习工具，已经成为全球考生必选。由于TPO试题的权威性和实用性，SmartStudy(网)组织了权威师资对TPO进行了逐套逐项逐题的详细讲读，包括题目理解，答题思路，解题步骤，答案分析和难点重点针对解析，覆盖最全面的做题逻辑，输出细致贴心的答题辅导，并以精美的课件清晰呈现。相信SmartStudy(网)托福版块的
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