Plenty of people dream of going to Mars（火星）．{#blank#}1{#/blank#} different from those people, 13-year-old Alyssa Carson has been working {#blank#}2{#/blank#} 　(happy) for that dream since the age of 4，according to a new report which {#blank#}3{#/blank#} 　(make) by the BBC not long ago.

    Alytsa tells the BBC,“I hope{#blank#}4{#/blank#} (go) to Mars because it is a place that no one has been to before. I want to take that first step.” According to the BBC, she{#blank#}5{#/blank#}  (attend) USA's three world space camps so far.

    Her father, Bert Carson, tells the BBC that Alyssa plans to be on the first long journey to Mars which is expected to take place in{#blank#}6{#/blank#} year of 2033.“We are proud {#blank#}7{#/blank#}  her,”he says.“We have the next eighteen{#blank#}8{#/blank#} (year) planned out.”One of those plans is Alyssa attending the International Space University.

Of course，Alyssa's dream could come with{#blank#}9{#/blank#}  (big) sacrifices（牺牲）than others.[If Alyssa goes to mars，maybe {#blank#}10{#/blank#} is very difficult for her to return to Earth. Still，her father says，"If that's the only choice she has，she still wants to go.”Alyssa agrees.

    Nowadays more and more people are using modern traffic and modern communication means. The world {#blank#}1{#/blank#} (it) is becoming much smaller. So life today is much easier than it was {#blank#}2{#/blank#} (hundred) of years ago. but it has brought new {#blank#}3{#/blank#} (problem). One of the biggest problems is pollution. To pollute mean to make things dirty. Pollution comes {#blank#}4{#/blank#} many ways. We see it, smell it, drink it and even hear it.

    Air pollution is still the most serious. It's bad to all living things in the world, but it is not the {#blank#}5{#/blank#} (bad) one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us become angry more {#blank#}6{#/blank#} (easy).

    Pollution by SO₂ is really the most dangerous problem of air pollution. It is {#blank#}7{#/blank#} (cause) by heavy traffic. It is true that {#blank#}8{#/blank#} there are fewer people driving, there will be less air pollution.

    The earth is {#blank#}9{#/blank#} (we) home. We must take care of it. That means {#blank#}10{#/blank#} (keep) the land water and air clean. And we must take care of the rise in pollution at the same time.

    Patricia was born in Michigan and grew up in California. When she was a little girl, she often stayed with her grandparents who lived in Union City, Michigan. One summer day, a meteorite (流星){#blank#}1{#/blank#} (fall) from the sky, right into her grandparents' backyard! Before that, her grandparents had lived a {#blank#}2{#/blank#}['kwaət] life on their farm. Now things were {#blank#}3{#/blank#}from before. They had so much to do. People came to see the meteorite. The professors from the {#blank#}4{#/blank#}[juːnɪ'vɜːsɪtɪ] came to study it and analyze (分析) it. Her grandparents had never talked to so many people in{#blank#}5{#/blank#}(they) lives! Everything changed.

    As you can guess, no one in the town had ever{#blank#}6{#/blank#}(see) a meteorite before! They were confused (困惑) and didn't know{#blank#}7{#/blank#}to do. Some people thought it would bring them good{#blank#}8{#/blank#}(lucky) if they touched it.

    Patricia loves to tell the story about her meteorite and even today, she carries a piece of the meteorite with her{#blank#}9{#/blank#}[weər'evə] she goes. When I met her, she let all of us touch it and make a{#blank#}10{#/blank#}. What might you wish for if you could meet Patricia and see her meteorite?