C

    Many scientists think that life may be very different by 2050.

    First of all, TV might not be used by 2050. People will choose music, films, programs and newspapers on the computer. And they can smell(闻) and touch things on the Internet. That sounds really interesting.

    Water pollution(污染) will become the most serious problem by 2050. Human beings will need more water than today. There will be less fresh water on the earth.

    Cars will not only run on the land but also fly in the air by 2050. That can help to alleviate the heavy traffic. There won't be any accidents, because computers will control the traffic. What's more, the speed of the plane will be much faster. It'll take only 2 hours for people to fly from Los Angeles to Tokyo.

    Robots will become very popular by 2050, because they don't ask for money and can work 24 hours a day. We'll see robots everywhere — factories, schools, hospitals, shops and homes.

    By 2050, medicine will be improved a lot. Cancer and AIDs won't be serious diseases.

    Sally and Susan are sisters. They are the same in some ways, but different in other ways.

    Both Sally and Susan have short and dark hair. They are both outgoing and popular. Sally is older and smarter than Susan. She reads more books and likes to talk about the things she reads. Sally isn't athletic.

    Susan is much more athletic than Sally. She plays basketball and volleyball well. And she enjoys watching sports on TV. Sally likes to watch sports, too, but she doesn't like to play them. Both sisters like school and get good grades at school. But Sally is more serious about her homework. Both of them like shopping and playing computer games on weekends.

根据短文内容，回答下列问题。

Doing "Clean "Exercise

    When you go for a run outside, chances are that you'll find litter all around you. Do you just go past it, or do you stop and pick it up? If you choose the second, you're part of the latest popular sport in the West: plogging.

    The word "plogging" is the Swedish phrase" plocka upp"（ pick up） and the English word "Jogging"(running slowly)put together.

    What a plogger needs is a rubbish bag and a pair of gloves to protect your hands. While collecting rubbish, ploggers learn to classify (分类)and deal with it correctly, too.

    Plogging seems simple but it does a lot of good to both the environment and your health. It can not only make the world greener, but also get you full body exercise, For example, a 30-minute logging burns around 288 calories（卡路里）， compared to 235 calories burned from just jogging.

    So next time you go out jogging, why not carry a rubbish bag and collect some litter along the way? Your body and the environment will thank you.

    Nina is 8 years old. One day, she brings her report card home from school. She gets good marks(分数). {#blank#}1{#/blank#}.

    However, her teacher writes on the report card: "{#blank#}2{#/blank#}, but she talks too much in class. {#blank#}3{#/blank#}. I think it may help her change this bad habit."

    Nina's dad signs(签字) the report card. {#blank#}4{#/blank#}: "I want to know your idea, I would like to try it out on Nina's mother!"

A. I have an idea

B. Nina is a clever little girl

C. There are many "A"s on it

D. He writes a note on the back

E. Nina's mother talks too much

The Inside of the World

    When I was a very little boy, I was always asking questions.

    One day when I was walking with my nurse along the city street, I asked, "Jane, what's under the street?" "Oh, just dirt (尘土) ," she replied. "And what is under the dirt?" "Oh, more dirt," she replied.

   {#blank#}1{#/blank#}. So I asked again, "Well, what's under that?" "Oh, nothing-I don't know-why are you always asking so many questions?" she asked

    I knew there must be something under that. {#blank#}2{#/blank#}. I also heard that Chinese lived on the other side of the world, head down. I wanted to find out if that was true.

    {#blank#}3{#/blank#}, down, down, down, till I came through on the other side, and then I would know. I was a very little boy, you see. With a small shovel (铁锹) , I started a hole in the back yard behind the grapevines (葡萄藤). No one knew what I was doing. {#blank#}4{#/blank#}.

    Then one evening my father asked, "What's that hole in the back yard?" {#blank#}5{#/blank#}.

He didn't laugh when I told him, but he asked me if I knew how far I would have to dig.

    I hadn't dug through the world, but I did know how far it was.