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Are you one of those people who can tell when a storm is coming based because your knees ache? Well, you may think you are. But a new study of more than 1.5 million seniors finds no relationship between rainfall and doctor visits for pain.

The idea that our bodies can react at all sorts of weather-related phenomena—including changes in temperature, pressure and rainfall—is not a new one. Hippocrates himself actually pointed out this idea 2400 years ago.

If you talk to people, millions and millions of people probably believe that things like rainfall influence symptoms of joint pain and stiffness(僵硬). But if you look at the studies, there’s actually been surprisingly little evidence to suggest that is true. Most of the studies have been quite small. And we were interested in thinking about whether we could come to this question in a “big data” sort of way.

According to a collection of more than 11 million visits that older Americans made to their primary care physicians, there is no difference in the proportion(比例) of visits to a doctor that involved a complaint of joint pain or back pain. They saw no “rain effect” even when it poured for seven days straight.

1.What’s the best title of this passage?

A Joint ache is not caused by rainfall.

B Joint ache may have no relationship with rainfall.

C Big data help to find out the solution to joint ache.

D Joint ache is caused by many reasons.

解析：选B。文章标题题。根据第一段最后一句But a new study of more than 1.5 million seniors finds no relationship between rainfall and doctor visits for pain.可知本文主旨是关节疼痛与下雨天没有关系，故选B。

2.When did Hippocrates live?

A In 400 BC.

B In 400 AD.

C In 2000 BC.

D In 2000 AD.

解析：选A。细节理解题。根据第二段Hippocrates himself actually pointed out this idea 2400 years ago. 可知希波克拉底生活在2400年前，现在是2018年，因此应该是公元前400年左右，故选A。

3.Which of the following statements is TRUE?

A People visit doctors at rainy days only.

B Most studies last for seven days.

C It’s not a new idea that body can react to weather change.

D Weather forecast could be made by body react.

解析：选C。细节理解题。根据第二段The idea that our bodies can react at all sorts of weather-related phenomena— including changes in temperature, pressure and rainfall—is not a new one.可知身体根据天气变化有不同反应不是一个新观点，故C项正确，故选C。

4.What does the underlined part “rain effect” mean?

A Rain may make the doctor busier.

B Rain will affect people’s lives.

C Rain may make you catch a cold.

D Body aches before or when rain is coming.

解析：选D。词义猜测题。根据第一段第一句Are you one of those people who can tell when a storm is coming based because your knees ache?和第三段第一句...rainfall influence symptoms of joint pain and stiffness可知降雨效应应该指的是下雨天引发的身体疼痛反应，故选D。

5.How did they found there is no relationship between rainfall and joint ache?

A They compared a collection of people paying visits to the doctors for joint ache.

B They used big data to sort out the connection between rainfall and joint ache.

C They did a research by following 11 million senior Americans.

D They did a research by doing a poll both at crowded squares and online.

解析：选A。推理判断题。根据第一段最后一句But a new study of more than 1.5 million seniors finds no relationship between rainfall and doctor visits for pain. 和最后一段第一句According to a collection of more than 11 million visits that older Americans made to their primary care physicians, there is no difference in the proportion of visits to a doctor that involved a complaint of joint pain or back pain. 可知这项研究是通过对比1100万人的病历得出的结论，故选A。