The second man complained every other mile, his back pain got more and more {#blank#}1{#/blank#}. On the 5^th mile, he couldn't stand it any more and fell down on the grass. “My back is hurting me so badly. I can't go any{#blank#}2{#/blank#} because of the pain and it is all because we had to carry that silly woman across the river!” Out of{#blank#}3{#/blank#}, he asked “Why aren't you complaining about it? Doesn't your back hurt?”

    “Of course not.” The first man replied. “You have been carrying the woman since we left the river bank. But I set her down five miles ago.”

    We are often like that second man who keeps on complaining and can't get over the pain of {#blank#}4{#/blank#}. Years later, we will still be carrying the burden, worn out and can't go any further.

    Hello! My name is Sally Green. My first{#blank#}1{#/blank#} is Sally. What's my {#blank#}2{#/blank#}name? It's Green. Look! This is my {#blank#}3{#/blank#} It's an {#blank#}4{#/blank#} telephone. And my telephone number {#blank#}5{#/blank#}643­5638. That is my key. What {#blank#}6{#/blank#}is the key? It's black. That girl is my {#blank#}7{#/blank#} She is Kate. {#blank#}8{#/blank#} last name is White. Oh, what's that {#blank#}9{#/blank#} English? It is a pen. It's Kate's pen. It's black.{#blank#}10{#/blank#}is Kate's telephone number? It's 658­8688.

A Cloud of Hope and Danger

    In 2050, a small cloud floats through the air in a hospital operating room(手术室). In the room a patient, suffering from cancer, lies on a table. The cloud surrounds (包围) the patient, {#blank#}1{#/blank#}her body and filling her lungs (肺). The cloud is not smoke or steam. It is made of millions of microscopic robots called nano-robots(纳米机器人). These tiny robots move from cell(细胞) to cell in the {#blank#}2{#/blank#}body, destroying the cancer cells.

    Fighting cancer with nano-robots is only an idea today, {#blank#}3{#/blank#}scientists say that it would be possible in the future. Using nano-robots for good purposes such as fighting disease or repairing the environment may be the {#blank#}4{#/blank#}to many of today's problems.

    However, nano-robots could be a {#blank#}5{#/blank#}risk as well. Since nano-robots are so tiny, they will have to work in large teams of many thousands to 'many millions. For this reason, nano robots will have to be programmed to build {#blank#}6{#/blank#}. Scientists will not have the ability to build millions of nano-robots one by one.

    This {#blank#}7{#/blank#}to reproduce(复制)is making some scientists worried. What if something goes wrong in the programming? Quite a lot of crazy nan-orobots would be far {#blank#}8{#/blank#}than any disease. Some people think that if they get out of control, nan-orobots could destroy the Earth.

    What should be done? Should we continue{#blank#}9{#/blank#}nan-orobots or should we search for other methods? This is one of the many difficult {#blank#}10{#/blank#}that we have to make in the future.

    A female swimming athlete once set a goal ( 目标) for herself. She decided to swim across the English Channael before she retired. If she could succeed, she would be the first person in the world {#blank#}1{#/blank#} did it. On that day ,she jumped into the sea without any hesitation(犹豫) and swam towards the opposite bank without any {#blank#}2{#/blank#}. In the journey, she faced heavy fog, heavy rain and heavy waves. Though she was {#blank#}3{#/blank#} , she still carried on swimming. But in the end, she gave up. And she didn't know that the opposite bank was only one mile away when she gave up.

    Later she was {#blank#}4{#/blank#} about the reason. And she said, "The reason why I gave up is that I could not see the place which I was going to reach  {#blank#}5{#/blank#}" It was a great pity that one mile broke her dream.

    Since we were young {#blank#}6{#/blank#} , too many success stories have been telling us about courage and persistence(坚持). But they never told us where to {#blank#}7{#/blank#} courage and persistence. You can only have courage when you know where your goal is. You can only manage to persist when you know where your goal is.

    And that's because when you know where your goal is, you can, only prepare {#blank#}8{#/blank#} well in the mind. Courage and persistence never {#blank#}9{#/blank#} from the sky. They come from weighing between input and output.

    A life without goal is {#blank#}10{#/blank#} a ship without a compass. It goes nowhere. There is no courage or persistence in a life without goals.

—I don't know