The Big Mac index is built on the idea of purchasing-power parity, the theory that in the long run currencies will converge until the same amount of money buys the same amount of goods and services in every country. A Big Mac currently costs $ 5.06 in America but just 10. 75 lira ($ 2.75) in Turkey , implying that the lira is undervalued. However, other currencies are even cheaper. In Big Mac terms, the Mexican peso is undervalued by 55. 9% against the greenback. Last week it also hit a record low as Mr Trump restated some of his campaign threats against Mexico. The peso has lost a tenth of its value against the dollar since November. Of big countries, only Russia offers a cheaper Big Mac, in dollar terms, even though the rouble has strengthened over the past year. The euro zone is also prey to political uncertainty. Elections are scheduled this year in the Netherlands, France and Germany, and possible in Italy. The euro recently fell to its lowest level since 2003. Britain's Brexit vote has had an even bigger effect on the pound, which has fallen to $ 1. 21, a 31-year low. According to the Big Mac index, the euro and the pound are undervalued against the dollar by 19.7% and 26. 3%, respectively. One of the drawbacks of the Big Mac index is that it takes no account of labour costs. It should surprise no one that a Big Mac costs less in Shanghai than it does in San Francisco, since Chinese workers earn far less than their American counterparts. So in a slightly more sophisticated version of the Big Mac index, we take account of a country's average income. Historically, this adjustment has tended to raise currencies' valuations against the dollar, so emerging-market currencies tend to look more reasonably priced. The Chinese yuan, for example, is 44% undervalued against the dollar according to our baseline Big Mac index, but only 7% according to the adjusted one. The deluxe Big Mac index has typically made rich-world currencies look more expensive. Because western Europeans have higher costs of living and lower incomes than Americans, the euro has traded at around a 25% premium against the dollar in income-adjusted burger terms since the euro's inception. But what once seemed to be a constant truth of burgernomics is true no longer. So strong is the dollar that even the adjusted Big Mac index finds the euro undervalued. The dollar is now trading at a 14-year high in trade-weighted terms. Emerging-world economies may struggle to pay off dollar-denominated debts. American firms may find themselves at a disadvantage against foreign competition. And American tourists will get more burgers for their buck in Europe.

单选题 Turkish lira is mentioned to show that______.

【正确答案】 D

【答案解析】解析：例证题。根据关键词Turkish lira定位到首段最后一句lira in Turkey，答案句为：implying that the lira is undervalued。[A]Big Mac index is unreliable“巨无霸指数并不可靠”；该项中的unreliable一词属于无中生有，且该项与答案句毫无关系，故排除。[B]lira’s purchasing power is low“里拉的购买力低”；该项与答案句也不能形成替换关系，可以排除。[C]hamburgers are cheaper in Turkey“汉堡在土耳其卖得更便宜”；该项与答案句同样无法替换。[D]some currencies are underestimated“一些货币价值被低估”；该项中currencies“货币”=the lira“里拉”，underestimated“低估”=undervalued“低估”；故该项为答案。注意：“提及具体例子的引用目的”这一类题，一般都会选择概括性的句子，而不是这个例子本身的问题。该题中[B][C]两项都是具体的表述，不属于作者提及的目的。

单选题 According to Paragraph 2, the value of currency may be influenced by______.

【正确答案】 C

【答案解析】解析：细节题。题干关键词为the value of currency“货币价值”，原文的Mexican peso“墨西哥比索”等同于题干中的currency。原文提到Last week it also hit a record low as Mr Trump restated some of his campaign threats against Mexico．“上周，因特朗普重提竞选时曾向墨西哥发出的某些威胁，比索也跌至有记录以来最低。”由此可见，货币价值可能受到政治因素影响，选项[C]正确。[A][B][D]三项原文均无明确体现或间接暗示。

单选题 We can learn from Paragraph 3 that______.

【正确答案】 D

【答案解析】解析：推理题。[A]political uncertainty will not affect European countries“政治不确定性不会影响欧洲国家”；该项对应第三段首句：The euro zone is also prey to political uncertainty．该句的prey表示“猎物”，be prey to sth．表示“受某事所影响”，该句意思为“欧元区也受到政治不确定性的影响”，可见该项与原文表述完全相反，故该项错误。[B]economic depression is the real reason for euro’s devaluation“经济萧条是欧元贬值的真正原因”：该项的economic depression“经济萧条”纯属无中生有，故该项容易排除。[C]the value of currency is conpletely decided by domestic factors“货币价值完全由国内因素决定”；该项completely一词过于绝对，且decided by domestic factors在原文也无法找到对应内容，故该项非正确答案。[D]the devaluation of the pound is mainly caused by Britain’s policy“英镑贬值主要由英国政策引起”；该项对应原文Britain’s Brexit vote has had an even bigger effect on the pound，which has fallen to $1．21，a 31-year low．“英国脱欧公投对英镑的冲击还要更大，其兑美元的汇率已跌至1．21，为31年来的最低水平。”其中Britain’s Brexit vote“英国脱欧公投”=Britain’s policy“英国政策”；the pound…fallen=the devaluation of the pound；故该项为正确答案。

单选题 American tourists in Europe may find that______.

【正确答案】 B

【答案解析】解析：细节题。根据American tourists，in Europe等词定位到最后一段最后一句：And American tourists will get more burgers for their buck in Europe．“而美国游客将会在欧洲用美元买到更多的汉堡。”[A]burgers are much more expensive“汉堡更加昂贵”；该项与原文表述相反，可以排除。[B]they have strong purchasing power“他们有强大的购买力”；该项与原文表述相近。[C]dollar will maintain its dominant position“美元将会维持其主导地位”；“将要维持主导地位”的说法，在时态上与原文不符合，原文并没有对未来进行推测，属于主观臆断。[D]they are faced with fierce competition“他们面临激烈竞争”；该项与答案毫无关联，容易排除。从感情色彩判断，原文的get more burgers for their buck是正向表达，选项[A]中“more expensive”，[C]中“lost”，[D]中“fierce competition”均为负面信息，只有[B]中“strong”为正向，故[B]为正确答案。

单选题 Which of the following is the best title for the text?

【正确答案】 A

【答案解析】解析：主旨题。[A]Big Mac Index：the Undervalued Currencies“巨无霸指数：被低估的货币”；[B]Big Mac Index：the Underestimated Dollars“巨无霸指数：被低估的美元”；[C]Big Mac Index：the Declining Economies“巨无霸指数：衰退的经济”；[D]Big Mac Index：Dollars VS Euros“巨无霸指数：美元对欧元”。文章首段尾句提到the lira is undervalued；第二段首句提到However，other currencies are even cheaper．In Big Mac terms，the Mexican peso is undervalued…下文反复提到各种货币价值被低估，故[A]项符合文章主旨大意。[B]错在underestimated dollars，文章讨论各种货币价值被低估，而美元很强势；[C]错在declining economies，文章强调货币价值被低估，而不是经济衰退；[D]过于片面，文章第三段、第五段和第六段都提到欧元与美元的比较，因此该项可以排除。综上，本题答案为[A]。