Recently some American scientists have given a useful piece of advice to people in industrialized nations．They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago．{#blank#}1{#/blank#}

    The scientists say that the human life has changed greatly．Our bodies have not been able to deal with these changes in lifestyle and this had led to new kinds of sicknesses．{#blank#}2{#/blank#}So they are called "diseases of civilization"．Many cancers and diseases of the blood system are examples of such diseases.

    Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco, probably none．{#blank#}3{#/blank#} However, a change in food is one of the main differences between life in ancient times and that of today.

 Stone Age people hunted wild animals for their meat, which had much less fat than domestic ones．They ate a lot of fresh wild vegetables and fruits．They did not have milk or any other dairy products, and they made very little use of grains．{#blank#}4{#/blank#} We eat six times more salt than our ancestors．We eat more sugar．We eat twice as much fat but only one third as much protein and much less vitamin C.

    {#blank#}5{#/blank#} But scientists say that we would be much healthier if we eat much the same way the ancient people did, cutting the amount of fatty, salty and sweet food.

 A．Modern people used to suffer from "diseases of civilization".

 B．People today probably don't want to live like our ancestors.

 C．These new sicknesses were not known in ancient times.

 D．Ancient people also got lots of physical exercise.

 E．In that case, they would live much healthier.

 F．But today, we enjoy eating a lot of these.

 G．Stone Age people lived a simple life.

    Have you used “um…” “like…” “you know…” in your speech? Catch words(口头禅) are unnecessary words used to fill up dead paces while you speak. Speaking too many catch words is like a bad habit that we are unaware of. While most people tend to ignore it in everyday conversation, in a formal speech or an interview, too many catch words can make even the best presentation look bad.{#blank#}1{#/blank#}

    Stop when we are in doubt. Catch words are used more often when a person is unsure about the sentence to use next.{#blank#}2{#/blank#}If you are lost or in doubt over what to say next, just stop speaking, take a long pause, breathe in , figure out what to say and start again.

    Speak consciously and slowly. If the speech is too long and you talk continuously without thinking, then you might also be pushing in a few catch words in between.

    {#blank#}3{#/blank#}It is best to memorize the tricky parts of the speech, like the introduction and the conclusion where a majority of the catch words are used.

{#blank#}4{#/blank#} Preparing for the speech is very important when trying to remove catch words. Make it a point to pause when there is a comma or give two pauses at the end of the sentence. If certain words in the speech need to be emphasized then underline them and practice them as they need to be said.

    Avoid catch words in conversations. Get a friend or your partner to help you out when rehearsing a conversation.{#blank#}5{#/blank#} Although it can be an unpleasant and often embarrassing process, but in the long run it helps in cutting down on catch words.

A. Practise your speech when you can.

B. Remember the saying that silence is golden.

C. Therefore we can find out best friends to guide us well.

D. Anytime you use a catch word, the friend can point it out.

E. So we should learn some ways to avoid speaking such words.

F. Structure the speech well to include as much information as is needed.

G. The mind is so busy trying to figure out what to say that there is a strong urge to speak such words.

    Just like other vitamins and minerals, vitamin D plays a key role in many important body functions. {#blank#}1{#/blank#}Not getting enough vitamin D can lead to weak bones, muscle weakness, and even cancer. Besides getting 10 to 15 minutes of sun exposure each day, consider including the following foods into your meal plan to help your vitamin D intake.

    Dairy products

    {#blank#}2{#/blank#}Cow milk provides your body with about 50% of your vitamin D daily requirements. Apart from milk, consider having cheese, butter, yogurt, and buttermilk. Look for low-fat versions if you are on a diet.

    Eggs

    Eggs are a superfood. {#blank#}3{#/blank#}They contain lots of protein, vitamin A, vitamin B12, vitamin B6, calcium and vitamin D. One egg provides your body with 11% of your daily recommended value of vitamin D. Isn't it a reason for having some eggs for breakfast or lunch?

    Caviar(鱼子酱).

    Caviar contains vitamin B12, vitamin B6, vitamin D, vitamin A, calcium, iron, and protein. If you are a big caviar fan, why not make it a part of your weekly meal plan? There are many ways to eat caviar. {#blank#}4{#/blank#}At the same time, avoid buying fake caviar.

    Lacking vitamin D is a big problem these days since we tend to spend more time in the offices during the day. {#blank#}5{#/blank#}Include these three foods in your meal plan to make sure your vitamin D intake is not low.

A. Eat your meals with enough vitamins.

B. But make sure you do not boil or bake it.

C. Cow's milk is an excellent provider of vitamin D.

D. That is the main reason why we lack vitamins.

E. This is because they contain so many vitamins and minerals.

F. Whenever possible, try to walk outdoors to get your vitamin D.

G. We need to meet our vitamin D needs to avoid serious health issues.

    The USA is a society formed by many different immigrant cultures that produced a new and mixed culture. Most Americans celebrate different customs which started in other countries and start several new traditions and cultures. {#blank#}1{#/blank#}

    {#blank#}2{#/blank#} They tend to live independently, and communicate directly, honestly and informally with their families, friends and colleagues.

    Americans always keep advancing with the times. {#blank#}3{#/blank#} In America, it is relatively common for both parents to work, and American women are equal partners in marriage.

    In the USA, the most common family unit consists of the parents and children living under one roof. Most American children are taught to compete, through organized sports and education, as well as speak out their minds and have confidence to stand up for what they believe in. {#blank#}4{#/blank#} Many immigrant families also feature several generations living under one roof, with younger family members respecting the elders' needs and valuing their opinions.

    When people from different cultures get married and have children, they may have issues when it comes to maintaining their unique traditions and mixing shared customs at the same time. {#blank#}5{#/blank#} However, with a little effort, children in these families can benefit from having both outlooks and traditions. Children who are raised bilingually can also benefit in future careers and learn to make decisions better than monolingual kids.

A. Many Americans find happy life is important.

B. They are also taught to respect their parents at all costs.

C. It can be a challenge to find the perfect balance between cultures.

D. According to socialists, the American family culture has many unique aspects.

E. American children refuse to follow their parents' advice and always argue with them.

F. Changing rather than sticking to tradition is considered by many Americans as improvement.

G. The difference is easy to deal with if parents can meet halfway and stand in the other's shoes.

    It's a dream come true for many fans to get a close view of their favorite stars and take pictures with{#blank#}1{#/blank#}However, sometimes their enthusiasm can cause troubles for others.

    At Hong Kong International Airport on Dec. 15, three young Chinese people boarded a Korean Aircraft.{#blank#}2{#/blank#}

    The three people -two from the Chinese mainland and one from Hong Kong — were fans of Wanna One, a Korean band, who were on the same flight. However, immediately after taking pictures with their "idols (偶像),the fans asked to get a repayment and got off the plane.{#blank#}3{#/blank#}They had to go through security checks again, which delayed the flight by over an hour.

    According to the flight regulations, all passengers need to get off and go through security checks once again even if only one passenger gels off the plane before takeoff.{#blank#}4{#/blank#}

    Cases of crazy fans buying flight tickets just to follow and get a close view of their idols are common nowadays, reported CGTN. A series of rules were issued in July in order to stop crazy fans from disturbing public security at the airport.

    "{#blank#}5{#/blank#}However, it shouldn't go too far and hurt the public interest. To obey public rules is the best way to follow idols," commented People's Daily.

A. To make up for the loss, a sizable amount of money went to 357 passengers.

B. As a result, all the remaining 360 passengers had to get off the plane.

C. This is in case any dangerous things have been left on the flight.

D. It's not unusual for fans and stars to share the same flight.

E. Some fans will do anything they can lo realize the dream.

F. It wanted to fly from Hong Kong to the capital Seoul.

G. There's nothing wrong with going after idols.

    It's the water that makes our daily lives possible. That's why protecting source water is one of the primary missions at the Washington Suburban Sanitary Commission. We provide safe, clean drinking water to 1.8 million residents in Prince George's and Montgomery counties.{#blank#}1{#/blank#}

    One way we protect the water is through the watershed. The watershed reduces the pollutants reaching the reservoirs. They hold the source water that provides 30 percent of our customers with drinking water. That's over 600,000 people. For many years, we have issued permits to allow limited recreational use of the watershed. {#blank#}2{#/blank#} It's a quiet, beautiful area away from urban stress and traffic. And we use it ourselves and other activities to promote water and environmental awareness.

    {#blank#}3{#/blank#} Last year, the WSSC issued new regulations with new restrictions impacting all users, including, closing the watershed a month earlier in the fall and opening it a month later in the spring. We also limited horseback riding to the access roads. Our goal was and is to protect the watershed.

    A very small but vocal group felt we should have consulted them first. Perhaps afterward we should have. But I do want to make one thing very clear. {#blank#}4{#/blank#} But we cannot allow the interests of a tiny group to override (不理会) the well­being of the WSSC customers who drink the water from those reservoirs. There must be a balance.

    {#blank#}5{#/blank#} So we hired a consultant to gather data, gather input from watershed users, and assess the condition of the watershed. We also asked them to look at our operations and management practices and provide the WSSC with findings and recommendations on how to make improvements.

    It's time to work together to protect the water and provide appropriate access to the rare jewel we call the watershed.

A. We certainly understand the attraction.

B. At no time did we consider closing the watershed entirely.

C. However, only a few people like saving water.

D. But most importantly it's about protecting the water.

E. The government has taken some strong measures.

F. We take that responsibility very seriously.

G. A review of our watershed policies and regulations was overdue.