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As a nation, we’re getting fatter

　　In Britain, people with a healthy body weight are in the minority．

　　Nearly two thirds of men(65％)and more than half of women(56％)are either overweight or obese(病态肥胖的)．

　　Nearly a quarter of men and women(24％)are obese．

　　The number of overweight and obese people in the UK is increasing．A recent government report showed that if current trends continue, the majority of people in the country will be obese by 2050, including 60％ of men and 40％ of women．

　　What is a healthy weight?

　　You can find out whether your weight is within the healthy range by calculating your body mass index or BMI．Check your BMI using our BMI chart．

　　For many people, it’s just not realistic to aim for a so-called “ideal weight” for your height．Instead of focusing on a target weight, it may be more helpful to work on changing your lifestyle, which can help you reach a healthier weight．

　　Small changes can have big effects

　　Most people gain weight throughout their lives, often without realizing it．Very small changes can result in large weight gains over time, For example by simply eating an excess of 50 calories per day – just half a biscuit – you could gain 5 pounds or 2kg over a year．So in 5 years’ time you could be over 25 pounds or 10 kg heavier．

　　But good news is that small changes of your lifestyle can lead reduction in body weight．This may sound simple, but in reality it takes commitment and effort to change the habits of a lifetime．The day-to-day choices we make about our lifestyle have the greatest effect on our weight．

　　Losing weight and keeping it off!

　　The best way to lose weight is to eat healthily, eat smaller amounts and _______．This will help you to take in less energy from food and increase the amount of energy you burn off by being more physically active．

1．What is the main idea of the text?(no more than 15 words)

2．Which sentence in the text is closest in meaning to the following one?

What affects our weight greatly is the way of life that we choose every day．

3．Fill in the blank in the last paragraph with proper words．(no more than 5 words)

4．How heavy could you gain in 10 years if you ate an excess of 100 calories every day according to this passage?(no more than 10 words)

5．Translate the underlined sentence into Chinese．

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

　　What is a yawn(哈欠)and why do people yawn?A yawn is often associated with a person being tired．　　1　　 People yawn for many reasons including stress, boredom, emotion and overwork．

　　Have you noticed that yawning seems to be contagious(会传染的)?If one person yawns, this appears to cause another person to yawn．Researchers have found that 40－60％ of people who see a picture of someone yawning will yawn themselves．　　2　　

　　Some people think that yawning is rude and suggests that you are bored or uninterested．Maybe a yawn is a signal to a group that it's time to go to sleep, or if someone yawns when they're bored, it may be a sign to change the topic of conversation．　　3　　 Animals of all types yawn．If you have a dog or cat, you've probably seen your pet yawn several times．Even some birds yawn such as cockatiel parrots, Adelie penguins and Emperor penguins．

　　Some of the scientific explanations of why we yawn claim it is caused by physical needs．One likely explanation is that the yawning reflex happens when our blood needs more oxygen．The deep breath helps supply the levels of oxygen in our blood．　　4　　 It is also thought that the same chemicals in our brain that affect our moods and emotions cause us to yawn．

　　Superstitions about yawning have been around for hundreds of years and can date back to the ancient Greeks．A common superstition says that a person must cover his or her mouth when yawning so that the soul does not escape through the mouth．　　5　　 Today most people do not believe these superstitions and know that a yawn is a physical reflex．

A．Did you yawn while reading this article?

B．Yawning is not limited to humans．

C．It will make you lose interest in your work．

D．But this is not always the cause for a yawn．

E．Even reading the word YAWN can make people yawn．

F．However, it doesn't mean that you need rest or relaxation．

G．Other people believe that yawning is a sign that danger is near．

H．Another common theory is that a yawn helps regulate our body temperature．