托福閱讀的文章一般都很長細(xì)節(jié)眾多，其中事實(shí)細(xì)節(jié)題可以說是難度較大的題目之一，需要對文章的細(xì)節(jié)內(nèi)容有很好的掌握。但事實(shí)細(xì)節(jié)題又是托福閱讀題中所占比例較大的題型，時(shí)間緊、任務(wù)重，要如何拿下呢?

　　1、鎖定信號詞-找到輻射區(qū)

　　事實(shí)細(xì)節(jié)題建議大家采用“鎖定信號詞-找到輻射區(qū)”的方法來解答事實(shí)題，我們一起來了解一下這種方法：

　　細(xì)節(jié)題題目一般都會就文章中的一個(gè)名詞或者一項(xiàng)事實(shí)來提問，該名詞或事實(shí)就是“signpost word(s)”，即所謂的信號詞;托福閱讀的題目一般都會針對某一段提問，建議大家在確認(rèn)了信號詞之后回到對應(yīng)段落，通過“scanning”及掃讀的方式，迅速定位到原文中的信號詞處，將信號詞上下幾句劃為輻射區(qū)進(jìn)行研究提高做題效率。

　　2、例題練習(xí)

　　一起來看例題將這個(gè)方法應(yīng)用到實(shí)戰(zhàn)中來吧。

　　題目

　　1. The period discussed in the passage isreferred to as an “explosion” because it

　　A occurred 0.6 billion years ago, late inEarth’s history

　　B was characterized by the unusually fastevolution of many new life-forms

　　C was characterized by widespread animalextinction

　　D was characterized by violent volcaniceruptions

　　題目問的是文章中討論的這一時(shí)期之所以被稱為“大爆發(fā)”是因?yàn)槭裁础?/p>

　　這篇閱讀文章是圍繞著“寒武紀(jì)生物大爆發(fā)”展開內(nèi)容的。在本題目，explosion就是我們所說的信號詞。

　　原文中與本題對應(yīng)的段落內(nèi)容如下：

　　The geologic timescale is marked by significant geologic and biological events, including the origin of Earth about4.6 billion years ago, the origin of life about 3.5 billion years ago, theorigin of eukaryotic life-forms (living things that have cells with truenuclei) about 1.5 billion years ago, and the origin of animals about 0.6billion years ago. The last event marks the beginning of the Cambrian period.Animals originated relatively late in the history of Earth – in only the last10 percent of Earth’s history. During a geologically brief 100-million-yearperiod, all modern animal groups (along with other animals that are nowextinct) evolved. This rapid origin and diversification of animals is oftenreferred to as “the Cambrian explosion.”

　　內(nèi)容很多，通過掃讀我們看到explosion這個(gè)詞出現(xiàn)在段落最后，我們將本信號詞前的兩句話定為輻射區(qū)

　　During a geologically brief100-million-year period, all modern animal groups (along with other animalsthat are now extinct) evolved. This rapid origin and diversification of animalsis often referred to as “the Cambrian explosion.”

　　解讀一下輻射區(qū)的意思：

　　在短暫的一億年的地質(zhì)學(xué)周期中，所有現(xiàn)代動(dòng)物群(包括現(xiàn)在已經(jīng)滅絕的生物)都進(jìn)化了。

　　這次快速的動(dòng)物起源和動(dòng)物種類多樣化情況產(chǎn)生的時(shí)期常常被稱為“寒武紀(jì)大爆發(fā)”。

　　我們了解到這一時(shí)期的特征就是動(dòng)物種類多樣化，動(dòng)物發(fā)展的速度快，這也是這一時(shí)期被稱為“大爆發(fā)”的緣由。