Lemon water is pretty popular. It's offered as a free upgrade to regular water at pretty many restaurants.{#blank#}1{#/blank#}, others are devotees of the possible health benefits. Here's what may happen if you take up the lemon water habit.

    Easier weight loss

    Studies in mice indicate that the antioxidants(抗氧化剂) in lemons can reduce weight gain despite a high-fat diet. More studies are needed to determine if the results can be applied to humans, but anecdotal evidence is favorable. People who drink lemon water regularly report easier weight loss, though it is unclear if the combination of lemon and water is the fundamental driver.{#blank#}2{#/blank#}.

    Get enough vitamin C

    Vitamin C is an important antioxidant that has a ton of health benefits. It can only be gotten from food as our bodies don't produce it alone. Getting your RDA (Recommended Daily Allowance) of vitamin C can lower the risk of heart disease, stroke, and high blood pressure. Vitamin C is good for your skin and bonds with free radicals (自由电子) that accelerate aging.{#blank#}3{#/blank#}, but they're a great source nevertheless.

    Stabilized moods

    Studies have found that smelling lemon scent reduces stress hormones that regulate mood. Drinking lemon water offers this benefit as well as the vitamins and potassium(钾) in the fruit. {#blank#}4{#/blank#}, and high blood pressure is related to stress, so not getting enough potassium can certainly affect your mood. All in all, lemon water can be a calming drink.

    In the end, drinking water is never a bad call, and there is absolutely no reason not to add lemon to it. Drinking lemon water provides some helpful nutrients and antioxidants. Give it a try!{#blank#}5{#/blank#}.

A. Lemon is a common smell in all manner of cleaning products

B. Potassium plays a huge part in regulating blood pressure

C. There is nothing to lose

D. Lemons aren't the highest in vitamin C

E. While some people drink it simply because of its taste

F. If adding lemon to water can encourage people to drink more

G. It could be that drinking more water helps dieters to feel full and avoid overeating

    What happens when you want to go from one place to another, but there's water in the way？That's the problem people faced for hundreds of years in the area that is now New York City. In the city, there is a natural canal called the Narrows, separating Brooklyn on one side from Staten Island on the other.

    But the Narrows isn't really so narrow. The water is almost a mile wide, and it's more than 100 feet deep. {#blank#}1{#/blank#}When they wanted to talk to each other, they climbed into their boats and sailed across.

    By the late 1800s, circumstances had changed dramatically. Population growth meant there were now many people needing to travel between Staten Island and Brooklyn for work. {#blank#}2{#/blank#}

    Between 1888 and 1920 there were two major efforts to build a train tunnel to connect the areas. {#blank#}3{#/blank#} Proposals to build a connecting bridge made during the 1910s also ended in failure due to opposition from the US Navy.

    Finally, after World War II, there were so many people living in New York City that leaders decided Brooklyn and Staten Island needed a direct connection. Since tunnels were too expensive, they decided to build a bridge. The design selected had two separate roadways stacked on top of each other. {#blank#}4{#/blank#}Construction, which took five years, was completed in 1964 and cost $320 million. Today about 190,000 cars and trucks cross the bridge every day.

    {#blank#}5{#/blank#} But in the case of the Narrows, figuring out a good solution took hundreds of years.

A. Sometimes getting from one place to another is easy.

B. Both were quickly abandoned however due to the high costs involved.

C. Neither road was large enough to satisfy the existing transport demands.

D. It was anticipated that the new train system would help the areas grow even faster.

E. Taking a boat every time was very slow, expensive and, in bad weather, unreliable.

F. Both would hang in the air from thick steel cables, supported by two giant steel towers.

G. For a long time that wasn't a problem, because only a few people lived in Brooklyn and Staten Island.

    Movies have documented America for more than one hundred years. Since Thomas Edison introduced the movie camera in 1893, amateur and professional movie-makers have used moving pictures to tell stories and explain the work of business and government. {#blank#}1{#/blank#} By preserving these movies, we will save a century of history.

    Unfortunately, movies are not made to last. {#blank#}2{#/blank#} Already the losses are high. Only 20% of US feature films from the 1910s to 1920s survive. Of the American features produced before 1950, about half exist. For independently produced works, we have no way of knowing how much has been lost.

    For many libraries and museums, the hardest step in preserving movie collections is getting started. The Movie Preservation Guide is designed for these organizations. {#blank#}3{#/blank#} These institutions have collections of moving pictures but lack information about how to take care of them. The Guide contains basic facts for "beginners" —professionals trained in history but unschooled in this technical area.

The Guide grew from user workshops at Duke University. At the sessions  beginners talked with technical experts about what they needed to know to preserve and make available their movie collections. {#blank#}4{#/blank#}

    Following the advice, the Guide describes methods for handling and storing moving pictures that are practical for research institutions with limited resources. {#blank#}5{#/blank#} The Guide has been translated into Chinese, Japanese and Korean.

A. "Keep it simple!" was the advice of the discussions.

B. They'll be damaged within years if not properly stored.

C. These organizations are the first to save American movies.

D. It is organized in chapters and includes case studies and charts.

E. It introduces movie preservation to nonprofit and public institutions.

F. They show how generations of Americans have lived, worked and dreamed.

G. They store the original movies and new ones under cool-and-dry conditions.

    Americans use many expressions with the word "dog". People in the United States love their dogs and treat them well. {#blank#}1{#/blank#} However, dogs without owners to care for them lead a different kind of life. The expression, to lead a dog's life, describes a person who has an unhappy existence.

    Some people say we live in a dog-eat-dog world. {#blank#}2{#/blank#} They say that to be successful, a person has to work like a dog. This means they have to work very, very hard. Such hard work can make people dog-tired. And, the situation would be even worse if they became sick as a dog.

    {#blank#}3{#/blank#} This means that every person enjoys a successful period during his or her life. To be successful, people often have to learn new skills. Yet, some people say that you can never teach an old dog new tricks. They believe that older people do not like to learn new things and will not change the way they do things.

    {#blank#}4{#/blank#} People who are unkind or uncaring can be described as meaner than a junkyard dog. Junkyard dogs live in places where people throw away things they do not want. Mean dogs are often used to guard this property. They bark or attack people who try to enter the property. However, sometimes a person who appears to be mean and threatening is really not so bad. We say his bark is worse than his bite.

    Dog expressions are also used to describe the weather. The dog days of summer are the hottest days of the year. A rainstorm may cool the weather. But we do not want it to rain too hard. {#blank#}5{#/blank#}

How to calm your teens

    A major source of teen stress is school exams, and test anxiety is not uncommon. When you recognize your teen is under stress, how can parents help your teen stay calm before an exam?

    Be involved. Parents need to be involved in their teen's work. {#blank#}1{#/blank#}What they look for is your presence - to talk, to cry, or simply to sit with them quietly. Communicate openly with your teen. Encourage your teen to express his worries and fears, but don't let them focus on those fears.

    Help them get organized. {#blank#}2{#/blank#} Together, you and your teen can work out a time-table in which she can study for what she knows will be on the test.

    Provide a calm setting. Help your teen set up a quiet place to study and protect his privacy.

    Give them a nutritious diet. It's important for your teen to eat a healthy, balanced diet during exam times to focus and do her best. {#blank#}3{#/blank#} If this happens, encourage your teen to eat light meals or sandwiches. A healthy diet, rather than junk food, is best for reducing stress.

    {#blank#}4{#/blank#} Persuade your teenager to get some sleep and/or do something active when she needs a real break from studying. Making time for relaxation, fun, and exercise are all important in reducing stress. Help your teen balance her time so that she will feel comfortable taking time out from studying to spend time with friends or rest.

    Show a positive attitude. {#blank#}5{#/blank#} Your panic, anxiety and blame contribute to your teen's pressure. Make your teen feel accepted and valued for her efforts. Most importantly, reassure your teen that things will be all right, no matter what the results are.

A. Encourage your teen to relax.

B. The best thing is simply to listen.

C. They will only make the situation worse.

D. A parent's attitude will dictate their teen's emotions.

E. Exam stress can make some teens lose their appetite.

F. Your teen may also make negative comments about themselves.

G. Help your teen think about what she has to study and plan accordingly.

    Parents of children and teens who play football may worry about their bodies getting injury. Younger football players have the lowest chance of injury. {#blank#}1{#/blank#} Therefore, it's necessary for players to know the rules of playing football whether they are young or old. The following can be used to reduce the chance of injuries while players are still enjoying the game.

    {#blank#}2{#/blank#} The American Academy of Pediatrics advises players and their families talk about whether the risks of injury outweighs the benefits of playing football. Football has many benefits, including regular exercise, learning to be part of a team, and social growth and development. Families who decide to play can take steps to reduce the chances of serious injury.

    Play by the rules. When players know the rules of the game—what's legal and what's not—fewer injuries happen. {#blank#}3{#/blank#} For example, players should know that in football they can't come from behind, crash into a player's legs, and steal the ball. It's legal and safer to go after the ball rather than the player.

    Wear legal equipment. {#blank#}4{#/blank#} Because illegal equipment leads to serious injuries of the head and neck. It's also the leading cause of severe injuries in football, but remember the protection of legal equipment doesn't depend on its quantity.

    Get good training. Players should learn the right way to use a tackle (装备). {#blank#}5{#/blank#} Correct training could lower injury for younger players. Older players could be at a greater risk of injury if they first learn to use tackle and never learn the correct skill.

A. Take steps to lower football injury.

B. Weigh the risks and benefits.

C. The more legal equipment players wear, the less injury they will get.

D. Legal equipment can give football players important protection.

E. Players should know what to expect from each other.

F. Doing this and practicing the skills often make sure players are correctly trained.

G. As players get older, stronger and faster, the chance of injury goes up.