For 100 years, people said middle age was about 50 years old. This is when we grow 'old'. However, new research says this should change. A study from the International Institute for Applied Systems Analysis (IIAS国际应用系统分析研究所) in Austria says middle age now starts at 60, 65, or older. The biggest reason is that we are living longer. We are also healthier, we eat better, we exercise more and we have nicer lifestyles. The IIAS said: "Life expectancies have increased over the past several decades. People once considered the 'old' should actually be viewed as more middle aged." 

The study was not a worldwide one. The researchers looked at people in 39 European countries. Britain's National Health Service (NHS英国国民健康保险制度) warned against thinking this study is 100 per cent true. It said the researchers did not look at things that could reduce life expectancy and make us die younger. It said we don't know if researchers looked at the possible impact of diseases and infections. Another problem might be antibiotic resistance, or the increased number of people with diabetes because of overweight. The NHS said healthy eating and exercise was the way to live longer.  

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1.What is the main reason that people think middle age should change?

A Eating better.

B Living longer.

C Exercising more.

D Nicer lifestyle.

解析：选B。B细节理解题。根据第1段第5句The biggest reason is that we are living longer.可知，故选B。

2.The followings could be the new start of middle age EXCEPT________ .

A 50

B 60

C 65

D 66

解析：选A。A综合理解题。根据EXCEPT一词可知50岁不是最新的中年起始点，故选A。

3.The researchers looked at people in_______.

A Asia

B America

C Europe

D Africa

解析：选C。C细节理解题。根据第2段第2句he researchers looked at people in 39 European countries.可知，故选C。

4.The underlined phrase “looked at” means ______.

A 调查

B 看

C 照看

D 巡视

解析：选A。A语义理解题。根据study（研究）、researchers等词可知look at理解为“调查”符合题意，故选A。

5.What can make people live longer?

A Healthy eating.

B Smoking.

C Drinking.

D Sleeping.

解析：选A。A细节理解题。根据第2段最后1句The NHS said healthy eating and exercise was the way to live longer.可知，故选A。