1 . At the end of a long day, it’s tempting to dive into your social feeds or Netflix queue the minute you've finished eating. But back before screens took up all our free time, an after-dinner walk was a popular activity. “Italians have been walking after meals for centuries,” says Loretta DiPietro, a professor at the George Washington University, “so it must be good.”

Research backs this up. One study co-authored by DiPietro found that when older adults at risk for type-2 diabetes (糖尿病) walked for 15 minutes after a meal, they had steady blood sugar levels in the hours afterwards. The human digestive system turns food into glucose (葡萄糖). After a meal, glucose floods a person’s bloodstream. Insulin (胰岛素) helps pull that glucose into cells. But for people with impaired insulin activity, too much glucose can remain in the blood, which can cause heart disease and other health problems.

What good does walking do? “The muscles we use to walk use glucose as energy, drawing it out of circulation and therefore reducing how much is floating around,” says Andrew Reynolds, a postdoctoral research fellow at the University of Otago. Reynolds conducted a study of people with type-2 diabetes and found that just 10 minutes of walking after a meal helped control their blood sugar levels. “We saw the biggest differences with walking after dinner time,” compared to other times of the day, Reynolds says. “The production of insulin in response to a meal tends to decrease later in the day. Getting up and moving around at that time was very effective,” he says.

A little post-meal movement may also aid digestion. But more isn't necessarily better when it comes to post-eating exercise. “Exercising muscles pull more of the blood flow their way during activity, and the GI tract (消化道) gets relatively less,” says Sheri Colberg-Ochs, a researcher at Old Dominion University. “That actually slows down the digestion of food in your stomach during the activity. Anything but really intense exercise would probably work equally well.”

So make like the Italians and head out for a walk after your next meal. Your TV and the Internet will still be there when you get home.

1. What does the underlined word “impaired” in paragraph 2 mean?

A．Related.	B．Monitored.
C．Damaged.	D．Expected.

2. What might be concluded from Reynolds’ words?

A．The body's ability to manage blood sugar varies in a day.

B．Insulin's function can be activated by exercise.

C．Moving around later in the day helps with sleep.

D．Dieting plays a part in controlling blood sugar levels.

3. What is wrong with really intense exercise according to Colberg-Ochs?

A．It damages the GI tract.

B．It delays digestion.

C．It causes breathing problems.

D．It increases blood sugar levels.

4. What is the text mainly about?

A．The health tips of Italians.

B．The danger of long-term sitting.

C．The health benefits of post-meal walks.

D．The causes of type-2 diabetes.

2 . In an age where health and well-being is stressed as part of a happy life, avoiding weight gain may be of high importance to many people.    1    You can make a few basic lifestyle decisions to help lower the chances of gaining weight.

Weight loss or gain is not a mystical, confusing process.    2    An average adult will burn between 1,500 and 2,000 calories per day when going about daily activities. Once it is established how many calories a person is likely to burn every day, avoiding weight gain becomes a simple matter of not consuming more than what is burned.

    3     Most typical supermarkets are set up so that produce, dairy, and bread are placed against the walls. By skipping the middle aisle that is occupied by frozen, processed and snack foods, a smart shopper can knock off a considerable amount of calories. If unhealthy food isn’t in the house, a weight-conscious person won’t eat it.

Avoiding gaining weight by doing exercise sounds like a good plan, but many people exercise inefficiently because of busy lives. “Weekend Warriors” attempt to make up for not exercising during the week with large amounts of sessions on weekends. However, this style of exercise makes injury more likely.     4    

Thirty minutes’ focused exercise every day will likely do more good than large amounts of workouts per week.     5    It can also be walking to the store, running around with the kids, swimming on hot days, and biking at the beach.

A．Drink about four large glasses of water per day.

B．Lifting weights while watching TV is also a kind of exercise.

C．Luckily, a variety of resources exist to help keep a healthy weight.

D．Shopping around the edges of grocery stores helps prevent weight gain.

E．Besides, it can lead to exhaustion, and overeating due to a drop in blood Sugar.

F．You’ve probably wondered at one time.or another how much you should weigh.

G．Instead, it is a simple calculation of calories eaten compared to calories

3 . 近日甘肃省马拉松21名参赛选手遇难事件引起人们对安全问题的反思。作为中学生，我们可能遇到哪些安全问题？该怎样处理呢？学校决定组织一次安全教育主题班会，请根据以下要点提示，以How to Keep Safe为题写一篇英文发言稿。写作要求：
1.结构完整，要点齐全，可适当发挥。
2.表达通顺，书写清晰。
3.文中不能出现任何真实的人名等信息。
提示信息:
中学生安全问题及对策: 一．交通安全：遵守交通规则。
二．食品安全：注意饮食安全。
三．活动安全：上下楼梯靠右行；体育锻炼要小心；不允许私自下河游泳。
遇险建议：遇到危险要保持冷静，保证自身安全，然后及时报警或向家长、老师求助

How to Keep Safe

Hello, everyone. Safety is very important for us. We should learn to protect ourselves. Here are some suggestions about how to keep safe.

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