托福阅读修辞目的题是阅读考试中比较常见的一种题型，tpo则是托福阅读备考最权威的材料，所以托福小编综合二者，为大家集中整理了tpo阅读中考察的修辞目的题及其对应的解析，供大家参考使用。本文带来的是TPO17-1的修辞目的题，一起来看看吧。
TPO17-1 Europe's Early Sea Trade With Asia
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The astrolabe had long been the primary instrument for navigation, having been introduced in the eleventh century. It operated by measuring the height of the Sun and the fixed stars: by calculating the angles created by these points, it determined the degree of latitude at which one stood (The problem of determining longitude, though, was not solved until the eighteenth century.) By the early thirteenth century. Western Europeans had also developed and put into use the magnetic compass, which helped when clouds obliterated both the Sun and the stars. Also beginning in the thirteenth century, there were new maps refined by precise calculations and the reports of sailors that made it possible to trace one's path with reasonable accuracy. Certain institutional and practical norms had become established as well. A maritime code known as the Consulate of the Sea. which originated in the western Mediterranean region in the fourteenth century, won acceptance by a majority of sea goers as the normative code for maritime conduct; it defined such matters as the authority of a ship's officers, protocols of command, pay structures, the rights of sailors, and the rules of engagement when ships met one another on the sea-lanes. Thus by about 1400 the key elements were in place to enable Europe to begin its seaward adventure.
9. Why does the author include the information that Western Europeans had developed and put into use the magnetic compass ?
To provide an example of an instrument that was developed after caravels had begun traveling across oceans
To provide an example of an improvement that resulted directly from the invention of the astrolabe
To identify one of the technological advances that made sea trade with the East possible
To explain how the problem of determining longitude was solved
解析：修辞目的题，修辞点所在句子只是单纯说明一个事实，没有观点，往前看，前一句又是一个例子，也不是观点，再次放弃，第一句不是中心句，所以也不行;后面一句也是个例子，还是不对。遇到这种情况要想想是不是整段都是一个例子，在支持前面各段的东西?而且也可以用排除法，B和D都是在简单说例子，就事论事，不选;A原文没说;所以C是答案，而且从第二段就一直在说怎么解决 东西方贸易的技术问题，这个也是技术问题的一个
[4] 中世纪应用最为广泛的海船是划桨帆船 ，船体低矮狭长能够使用帆，但主要还是靠浆操控。最大的划桨帆船有50个划手由于船体相对较浅，靠帆航行或是在汹涌的海面上航行时很难保持稳定。因此它们不适合在去往东方的航线上航行。即使紧贴着非洲海岸线行驶，这种船也很难穿越印度洋。15世纪初，造船专家们开始研制一种能够适用于波涛汹涌的开放海域的新型船只——轻快帆船。这种海船船体比划桨帆船更宽更深，因此可以运送更多的货物，稳定性的提升使得船体能够增加多个桅杆和船帆。最大型的轻快帆船上，两根主桅杆撑起大块船帆就能够提供足够的推力驱动帆船前进，同时一个小型的前桅杆撑起一块三角形船帆，这种船帆叫做三角帆 ，它可以移动到不同位置控制帆船。
以上就是托福阅读TPO17-1中的修辞目的题及其解析，大家可以在备考的时候参考复习，希望能够帮助大家的考前准备。最后前程百利祝大家都能取得理想的托福考试成绩。
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