阅读下面短文，按要求完成各项任务。

Many people run for exercise. But what will you do if you are not a “born” runner or jogger (慢跑者)? You may still want a kind of exercise that's inexpensive and easy to do. Why not try walking?

Walking requires no special equipment (装备). It is a kind of exercise that almost any normal, healthy person can do. Walking is good for your health like jogging or running; it will just take longer. Jogging and running make your heart work harder than walking. They also put more stress on your legs and feet than walking does.

    The problem with walking is that most people don't take it seriously. But there's a big difference between serious walking and the walking that most of us do. Walking, like jogging, should have a steady and continuous motion (稳健而持续的动作).

If you want to get your exercise by walking, you need to have your own walking plan. After all, runners and joggers set goals for themselves. Walkers need goals, too. You also need to set a course to walk. Start by walking about 15-30 minutes a day. Increase your time and distance (距离) slowly. And try increasing your walking speed little by little.

If you prefer to jog or run, follow the same advice. Start off slowly. Spend most of the first few days just walking. Then, start walking and running on the same day. Run or jog a short distance, then walk for a while, then, run, then walk. Follow that pattern for 15-30 minutes a day. Slowly make each run longer and each walk shorter. Later on, you can increase your distance, speed and exercise time.

    Skyscrapers are very tall buildings in a city.  Looking up at them might make you dizzy (眩晕的). {#blank#}1{#/blank#} Skyscrapers are a .wonder, whether (不管) you are looking up or down.

    How can the buildings be so tall? Something that happened during the 1880s made it possible. {#blank#}2{#/blank#} First, a man named William Jenney got the idea of using a steel frame to hold up the walls and floors (钢架支撑墙壁和地面) of a building Jenney s idea made it possible to build taller buildings so he is called the "Father of the American skyscraper" Second, the elevators （电梯）improved. {#blank#}3{#/blank#}That helped people go up and down the tall buildings more easily."

    Back in the 1880s, Jenney s first tall building was 10 stories (楼层) high. {#blank#}4{#/blank#}In 2004, Taipei 101, at 101 stories high, became the tallest building in the world. But soon the Burj Khalifa in Dubai overtook it in 2010. The 828-meter building has 163 stories.

    {#blank#}5{#/blank#} For example, Shanghai Tower in China, One World Trade Center in the USA, Abraj Ai-Bait Clock Tower in Saudi Arabia, etc. All of them are really wonderful, aren't they?

根据材料内容，从方框中选择合适的句子填入文中空缺处，使材料完整、通顺。

⑴{#blank#}1{#/blank#} People might grow plants and vegetables in the sea in about 50 years.

⑵{#blank#}2{#/blank#} The Lost World is an exciting American movie. People, especially school students, may like it better in free time.

⑶{#blank#}3{#/blank#} Though you could buy the world, you could not buy a happy family, good friends or knowledge (知识).

⑷{#blank#}4{#/blank#} For parents with children, an important problem is getting the children away from the television to do their homework.

⑸{#blank#}5{#/blank#} When you need help for your homework, go to the library. You may find magazines, newspapers and big dictionaries there. They can always help you.

    Do you know the weather in Henan? There are four seasons in Henan. The weather in Henan is not the same in four seasons.

    It is warm in spring. People like to climb mountains. In spring, a lot of children go out to plant (种植) some trees.

    What's the weather like in summer? Well, it is bot in summer. People like to go swimming in summer.

    It is cool in autumn. Sometimes it is windy. People like to go on a trip in autumn.

    How's the weather in winter? It is cold in winter. Sometimes it snows. People always wear warm clothes in winter. The old people don't go out because it is cold, They usually watch TV at home and keep warm.