The book A Big Fat Crisis: The Hidden Forces Behind the Obesity Epidemic (频率突增)—and How We Can End It by Deborah Cohen, a senior natural scientist, is very popular now.
1.If you’re obese, blame your genes.
2.If you’re obese, you lack self-control.
Research shows that if we are faced with too much information, we have a tendency to make poor choices on diet.
3.
Although the US Department of Agriculture estimates that fewer than 5 percent of Americans live in the “food deserts”, and that about 65 percent of the nation’s population are obese. For most of us, obesity is not related to access to more fresh fruits and vegetables, but to the choices we make in supermarkets.
4.The problem is not that we eat too much, but that we don’t exercise.
Michelle Obama’s “Let’s Move” campaign is based on the idea that if kids exercise more, childhood obesity rates will decrease.
| A．Obesity rates have increased. |
| B．People hold different views on obesity. |
| C．People benefit a lot from physical activity. |
| D．Lack of access to fresh fruits and vegetables is a cause of obesity. |
| E．Fresh fruits and vegetables we choose in a supermarket are related to obesity. |
| F．But there was no obvious decrease in physical activity levels as obesity rates climbed in the 1980s and 1990s. |
| G．Our world has become so rich in food that we can be led to consume too much in ways we can’t understand. |
相似题推荐
【推荐1】Eyes not only let you see shapes and millions of colors, but also help manage the light signals that keep your body’s internal clock running properly. Your eyes are among your most important organs, but you shouldn’t take your eyes for granted.
Protect against eye strain. Sometimes you pose the greatest danger to your eyes.
Wear sunglasses with UV (紫外线) Protection. The right pair of shades will help protect your eyes from the sun’s UV rays. Too much UV exposure boosts your chances of cataracts and macular degeneration. Choose a pair of sunglasses that blocks 99% to 100% of UVA and UVB rays. Wraparound lenses help protect your eyes from the side. And Polarized lenses reduce glare while you drive. If you wear contact lenses (隐形眼镜), some offer UV protection.
Use safety eyewear. If you use dangerous materials that can be transported by air on the job or at home, wear safety glasses or protective goggles (护目镜).
Be smart! Visit your eye doctor periodically and take care of your eyes to keep them healthy.
| A．Take in enough vitamins. |
| B．Eat well for good eye health. |
| C．Take these easy steps to keep your eyes healthy. |
| D．Sports like ice hockey can also lead to eye injury. |
| E．But it’s still a good idea to wear sunglasses for an extra layer. |
| F．Overworked eyes lead to short-term and long-term eye and vision problems. |
| G．So wear sunglasses when you’re outside or driving to protect your eyes from UV rays. |
【推荐2】Have you ever wondered if you see the same colours as other people? Most people know what blue is when they see it. They call it "blue” because they were taught the word and connected it with what they saw. But how do you know what you see as blue isn’t someone else s red?
The ability to perceive (感知) different colours is up to receptors (接受器) in our eyes. Light waves hit these receptors and they react depending on which colour the light is, sending signals to the brain. The brain then reads these signals to determine which colour light the eyes are receiving.
Some people’s receptors are more developed than others. The inability of the receptor to feel the light waves correctly means that some people cannot tell the differences between similar colours.
Those with more developed receptors can see more colours. We sometimes hear people having an argument about whether something is dark blue or black. It might be because one person has stronger receptors to feel the light than another.
In the past, most scientists would argue that everyone saw colours in the same way. However, research was conducted on monkeys, in which their receptors were changed. This enabled them to see more colours than usual. Normally monkeys can only see blue and green, but the change allowed them to see red. Their brains automatically (自动地) got used to new colours. This suggests that our brains may adapt depending on our stimulus (刺激) and find new colors of the things we see. Colours could be a very personal experience, unique to everyone.
So, the next time you talk about your favourite colour, just remember if yours is blue and your friend says red, you two might actually be thinking about the same colour. What if everyone in the world has the same favourite colour, but just calls it different names?
1. What is Paragraph 2 mainly about?| A．How we perceive colours. |
| B．The inability to see colours. |
| C．What the brain does with signals. |
| D．The connection between receptors and light waves. |
| A．Some people cannot feel colours with their developed receptors. |
| B．The more light people feel, the weaker receptors they have. |
| C．People with poor receptors usually have colour weakness. |
| D．People who have strong receptors can see dark blue. |
| A．To test the monkeys with colours. |
| B．To develop the receptors of humans. |
| C．To enable monkeys to find more colors. |
| D．To prove everyone sees colours in a different way. |
| A．A film review. | B．A science magazine. |
| C．An art magazine. | D．A business newspaper. |
【推荐3】A Common Habit Leads to Shocking Harm
Crossing your legs is an extremely common habit; most people don’t even notice that they’re doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.
A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason this happens is because the blood in your legs has to work against gravity to be pumped back to your heart, crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won’t feel any immediate effects, but if you sit for long periods of time it’s important that you take note of how long you have your legs crossed for. You shouldn’t have your legs crossed for more than 15 minutes, and it’s important that you get up and walk around at least once every hour.
Crossing your legs can also lead to neck and back pain. Ideally, it’s best for our bodies to sit with our feet planted flat, hip width apart, on the floor, but it’s not easy to maintain perfect posture all day at the office. When you sit with your legs crossed your hips are in a twisted position, which can cause one of your pelvic bones to rotate. Since your pelvic bone supports your neck and spine, this can cause pressure on your lower and middle back and neck.
You also might notice that when you sit with your legs crossed for long periods of time your feet and legs get tingly or have the feeling of being asleep. This is because when one leg sits on top of the other it causes pressure on the veins and nerves in your legs and feet. It can cause numbness or temporary paralysis in the legs, ankles, or feet. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.
So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.
1. According to the passage, which is not the problem caused by sitting with your legs crossed?| A．Increase blood pressure |
| B．Cause neck and back pain |
| C．Lead to numbness or temporary paralysis |
| D．Keep in a twisted position |
| A．Go straight |
| B．Move around |
| C．Fall down |
| D．Work against gravity |
| A．Once you cross your legs while sitting, you’ll feel immediate effects. |
| B．The numbness in the legs ,ankles or feet won’t cause permanent nerve damage. |
| C．The perfect posture for sitting is to sit with your feet planted flat and hip width apart. |
| D．As long as you cross your legs for less than 15 minutes, it won’t do harm to your health. |
