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Some years ago, a 28­year­old Californian wife and mother of three children died from drinking too much water. Her body was found in her home shortly after she took part in a water­drinking contest that was held by a local radio show. Called “Hold Your Wee For A Wii”, the contest organizers promised a free Wii video game machine to those who drank the most water without going to the bathroom. The woman who died drank about 2 gallons of water during the contest. When she and other participants complained of discomfort and showed signs of pains, they were laughed at by the organizers.

This tragic news story shows the importance of understanding why drinking too much water can be dangerous to your health.

Consuming more water than you need can increase your total blood volume (容量). And since your blood volume exists within a closed system, increasing your blood volume puts unnecessary stress on your heart and blood vessels (血管). Your kidneys (肾) must work overtime to get rid of extra water out of your system. Your kidneys are not a pair of pipes. Flushing more water through your kidneys doesn't necessarily help it become cleaner. Rather, your kidneys can get damaged by unnecessary wear and tear over time. And drowning your system with large amounts of water is one of many potential causes of kidney damage.

Putting unnecessary stress on your system and your kidneys by consuming unnecessary water is an unnoticeable process. For the average person, it is usually impossible to know that this stress exists, as there are usually no obvious symptoms on a moment­to­moment basis. But make no mistake about it: this stress is real and can hurt your health over the long term.

【小题1】Why is the Californian woman mentioned?
A.To lead to the topic of the text.
B.To tell us a tragic news story about a mother.
C.To tell us it can be dangerous to take part in contests.
D.To tell us how much water we can drink at most one time.
【小题2】When the participants showed signs of pains, the organizers ________.
A.became very concerned
B.were laughed at by others
C.tried to reduce their pains
D.didn't pay much attention to them
【小题3】What's the main idea of Paragraph 3?
A.How water is consumed in our body.
B.The importance of water to our health.
C.Why drinking too much water is dangerous.
D.The function of kidneys in consuming water.。
【小题4】The stress caused by consuming unnecessary water ________.
A.isn't that dangerous
B.can never be found out
C.is really harmful in the long run
D.leads to some obvious symptoms
17-18高二下·陕西延安·阶段练习
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I used to overeat. I’ve never been significantly overweight, so people are surprised to hear this. When you think of overeating, you think of someone who is above their natural weight range(范围), right? Well, I used to purposefully undereat as well. I was able to keep my weight within some control, but only through a lot of physical and mental pain.

Here’s a glimpse(一瞥)into my life as a first-year university student:

Friday: Go to a party and eat a lot of chips. Feel guilt and regret. Vow (发誓) to wake up and run an extra mile.

Saturday: Run 6 miles, come home and only eat a tiny breakfast. Eat like a bird for the rest of the day. Feel proud of myself.

Sunday: Study and snack on chocolate chips all day. Feel sick.

Monday: Head to class with no snack and no money so that I can’t buy any food. Feel hungry but full of willpower. Go home and overeat at dinner. Feel out of control.

My feelings were on a constant pendulum shift. I was proud and in control one moment, and then full of regret and out of control the next. It was exhausting.

As I studied nutrition and human anatomy(人体解剖学) in university,I started to learn just how amazing the human body is! The human body is an amazing, self-regulatory system. It knows precisely how much food it needs. When I learned this, my whole world changed. I stopped trying to manage my eating with willpower. Instead of trying to power through my hunger, I would provide my body with wholesome foods, so I would feel hungry less often.

This process definitely took some work and reflection, but after a while it became second nature. Eating has become a joyful experience, instead of a source of stress and worry in my life. All my eating is now guilt-free! I shamelessly eat unhealthy snacks without regret. Of course, the majority of my food intake does come from whole, healthy foods that are close to nature.

【小题1】What do we know about the author when she was in college?
A.She was seriously overweight
B.She had unhealthy eating habits
C.She did little physical exercise
D.She got teased about her weight
【小题2】The underlined part "on a constant pendulum shift" in the text can best be replaced by_______.
A.easily hurtB.growing strong
C.poorly understoodD.changing regularly
【小题3】What did the author do after studying nutrition and human anatomy?
A.She exercised in order to lose weight.
B.She began to listen to her body’s needs
C.She stopped eating unhealthy food
D.She started to go on a diet
【小题4】How does the author develop the text?
A.By giving instructions
B.By explaining a process
C.By discussing research findings.
D.By sharing a personal experience

I know what you’re thinking: pizza? For breakfast? But the truth is that you can have last night’s leftovers in the a. m. if you want to.

I know lots of women who skip breakfast, and they have a ton of different excuses for doing it. Some say they don’t have time. others think they’re “saving” calories, still others just don’t like breakfast food .

But the bottom line is that eating in the morning is very important when you’re trying to lose weight. “Eating just about anything from 300 to 400 calories would be better than nothing at all,” says Katherine Brooking, R., D., who developed the super-easy eating plan for this year’s “SELF CHALLENGE”. And even pizza can be healthy if it’s loaded with vegetables, and you stick to one small piece.

Breakfast is one meal I never miss, and the same goes for most weight loss success stories. Research shows that eating breakfast keeps you from overeating later in the day. Researchers at the University of Southern California found that breakfast skippers have a bigger chance of gaining weight than those who regularly have a morning meal.

So eat something in the morning, anything. I know plenty of friends who end up having no breakfast at all, and have just coffee or orange juice. I say, try heating up last night’s leftovers---it may sound crazy, but if it works for you, do it! I find if I tell myself, “You can always eat it tomorrow,” I put away the leftovers instead of eating more that night. Try it…you may save yourself some pre-bedtime calories. And watch your body gain the fat-burning effects.

【小题1】What can we infer from the text?
A.Working women usually have breakfast in a hurry.
B.Many people have wrong ideas about breakfast.
C.There are some easy ways of cooking a meal.
D.Eating vegetables helps save energy.
【小题2】According to the last paragraph, it is important to____________.
A.eat something for breakfastB.be careful about what you eat
C.heat up food before eating itD.eat calorie-controlled food
【小题3】The text is written mainly for those_____________.
A.who go to work earlyB.who stay up late
C.who want to lose weightD.who eat before sleep

It’s reported that scientists in London have found the best diet for both humans and the planet.

If the world followed the so-called “planetary health” diet, each year more than ll million early deaths could be avoided according to the scientists. For the health of the planet, they say the same diet will reduce (减少) greenhouse gases and save more land, water and animals. This new food plan is the result of a three-year project organized by The Lancet health journal.

Tim Lang, a professor at Britain’s University of London. He said, “The food we eat and how we produce it decide the health of people and the planet.” Lang added, The world’s population is expected to grow to 10 billion people by 2050. If we want to feed everyone, we all need to change what we eat and the way we eat by improving food production and reducing food waste”. So, what do you eat on the “planetary health” diet?

The scientists who created the “planetary health” diet say it is largely plant-based but still has a little milk, fish and meat. The diet calls for cutting down red meat and sugar by 50 percent and increasing nuts, fruits, and vegetable.

Walter Willet of Harvard University in the United States also talked about the “planetary health” diet. He said, “More than 800 million people around the world do not get enough food while many more people have very unhealthy diets.”

The scientists think it difficult to reach their aim. But for them, doing nothing is also not a choice Willet said, “If we can’t make the best diet, it’s better to try and get as close as we can.”

【小题1】What decides the health of people and the planet according to Tim Lang?
A.The taste of the food.
B.The number of population.
C.The climate and our living conditions.
D.The food we eat and the way we produce it.
【小题2】What does the “planetary health” diet mainly contain?
A.Milk.B.Meat.
C.Sugar.D.Plants.
【小题3】What do scientists say about the “planetary health” diet?
A.It is very easy to produce it.
B.It is better to try their best to make it.
C.It is better to do nothing than fail.
D.It is impossible to make it.
【小题4】What is the best title for the text?
A.Humans Health Is Very Important.
B.Many People don’t Get Enough Food.
C.A New Kind of diet may Save the Plane.
D.Different People have Different Eating Habits.

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