托福聽力所有題型中，占到比例最大的是細節題，對于很多的同學來說也是一個比較頭疼的題型。而在此基礎之上，再把難度進一步提升的是雙選型的細節題，很多同學會發出這樣的感概：單選都已經挺難，還讓我選兩個，簡直要我命啊!而在教學的過程中也發現，很多的同學基本只能選對一個，當然成功避開兩個正確答案，選擇兩個錯誤答案的也不在少數。
 

那么，對于雙選題，同學們究竟該怎么破呢?
 

從TPO中的雙選題出題思路來看，雙選題的答案還是可以總結出一定規律的，同學們在做題的過程中也要多總結，多思考，在聽力的過程中進行準確定位，對于出題點進行有效的預判并在筆記中進行記錄標記，還是可以很容易解決雙選題的。
 

雙選題出題思路：并列結構

e.g.TPO13-L1-Q3

教授在講解建造步行街所要考慮的兩個關鍵因素：位置和設計

然后在講解位置的時候又引出了選擇位置時所要考慮的兩點因素：接近潛在客戶群和接近公共交通

文中首先出現了這樣的信號詞：two considerations，之后便緊接著出現了一個并列結構：proximity to potential customersand accessibility to public transportation

當我們在筆記中把customer 和 transportation兩個關鍵詞都記錄到的話

再來看題目

What are two aspects of location that need to be considered when planning a pedestrian mall?Click on 2 answers

A. The proximity to the customer base

B. The number of nearby tourist sites

C. The variety of restaurants in the area

D. The access to public transportation
 

很容易的就會在選項A & D中找到我們需要的關鍵信息

參考原文：

Well, there are two critical factors to consider when creating a pedestrian mall - location and design, both of which are equally important. Now let's start with the location. In choosing a specific location for a pedestrian mall, there are in fact two considerations: proximity to potential customers, um...that's what we would call a customer base, and accessibility to public transportation, which we will get to in just a moment.
 

我們再來看一個例子

e.g. TPO15-L1-Q2

文章開始部分提到了一個叫做CFQ的問卷，用于調查人們在不同情況下被干擾的頻率問題;而當學生提及自己忘記存電腦文件并非是并干擾而就是單純忘記之后，老師提出了”And that's part of the problem with the CFQ.”
 

并指出問題是 “It doesn't take other factors into account enough, like forgetfulness.”之后老師又引出了第二個問題 “Plus, you really can't say you are getting objective scientific results from a subjective questionnaire where people report on themselves.”
 

從這段文本中我們發現了一些并列結構的線索——part of the problem，潛在的含義就是problem不止一個部分，至少還有另外一個部分，之后的plus也正式了這一點。
 

這里的part of 就和其他TPO中出現過的one of差不多，one of隱含的其實也是一個包含兩點的并列結構。

通過上面的文本，我們鎖定了筆記關鍵詞

1.×other factor

2. subj

來看題目

According to the professor, what are two weaknesses of the Cognitive Failures Questionnaire?Click on 2 answers

A.It relies on subjective reporting.

B.It assesses a limited number of situations.

C.It does not assess visual distractions

D.It does not account for factors other than distractibility.

根據筆記，鎖定答案A/D
 

由上述兩個例子可以看出，同學們在聽文章時應有意識的去把握文中的一些并列成分，如并列的原因，結果，例子，建議，問答等等，并注意一些常用來連接并列事物的詞，如最簡單的序數詞first, second, third，再如其他并列詞：one (of), part of, plus, next, also, another, the other, besides, in addition, etc.
 

當然，需要指出的是，有些雙選題的答案可能會在文章前后出現，或者聽不出文中明顯的并列結構。這種題目的難度比在文章直接出現的并列結構更加難于定位。

e.g. TPO19-L2-Q5

這是一篇比較難的天文學文章，文章后面提到radio wave的時候老師提到了它的一個problem，用了one problem，

“One problem is that radio waves from these far away objects, even though they can get through, are extremely faint.”

很顯然，按照我們前面講過的one problem可能后面接下來是會再出現第二個problem

然而，這篇文章后面并沒有緊接著立馬出現說the second problem或者another problem

而是在講了蠻多內容之后，通過師生互動提問的方式引出了第二個problem

“Female Student

Well, if the radio waves are so good at getting through the universe, what's the problem?

Professor

Well, answer this, how come people have to turn off their cell phones and all our electronic devices when an airplane is about to take off?

Male Student

The phones interfere with the radio communication at the airport, right?

Female Student

Oh, so our radio waves here, on Earth interfere with the waves from space?

Professor

Yes, signal from radios, cell phones, TV stations, remote controls, you name it, all these things cause interference.”

希望通過上面的一點簡單分析，能夠幫助大家在做雙選題目的時候提供一些思路和幫助。