1. (2021高一下·大理开学考) 阅读理解

Belly fat (stomach fat) has long been thought to be especially bad for your heart, but now, a new study adds more evidence to the idea that it may also be bad for your brain.

The study, from the United Kingdom, found that people who were overweight and had a high waist-to-hip ratio (a measure of belly fat) had slightly lower brain volumes (容量), on average, compared with people who were just over weight or had a healthy weight. Specifically, belly fat was connected with lower volumes of gray matter, the brain tissue (组织) that contains nerve cells.

"Our research looked at a large group of people and found obesity (肥胖),specifically around the middle, may be linked with brain shrinkage (萎缩)," lead study author Mark Hamer, a professor at Southborough University, said in a statement.

Lower brain volume, or brain shrinkage, has been linked with a higher risk of memory recession, which leads to being forgetful.

The new findings, published on Jan. 9 in the journal Neurology, suggested that the combination of obesity (as measured by body mass index, or BMI) and a high waist—to—hip ratio may cause brain shrinkage.

However, the study found only a connection between belly fat and lower brain volume, but couldn't prove that belly fat actually caused brain shrinkage. It could be that people with lower volumes of gray matter in certain brain areas are at a higher risk of obesity. Future studies are needed to find out the causes for the connection.

1. （1） What can we infer about belly fat from the new study?

   A . Belly fat may have a bad influence on our brain. B . Belly fat can help increase brain volumes. C . Belly fat affects people's diet. D . Belly fat is bad for our eyes.
3. （2） Who most probably suffer from brain shrinkage according to the new study?

   A . A tall and thin man. B . A man with too much belly fat. C . A short and thin man. D . A man with normal body weight.
5. （3） What does the underlined word "recession" in paragraph 4 mean?

   A . Going ahead. B . Getting poor. C . Getting active. D . Going around.
7. （4） What do the researchers need to study further according to the text?

   A . The real cause of getting obesity. B . The danger of getting too much fat. C . The bad effect caused by belly fat and brain shrinkage. D . The reasons for the connection between belly fat and brain shrinkage.