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.

    Alyssa 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) the 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 the Earth. Still, her father says, "If that's the only choice she has, she still wants to go." Alyssa agrees.

    At the end of the term, our ethics (伦理学) professor gave us a test. He had told us {#blank#}1{#/blank#} (expect) one and had warned us it would be included in the final grade.

    The test began. Sure enough, I was {#blank#}2{#/blank#} confident that I finished all the questions after forty {#blank#}3{#/blank#} (minute) except the very last one: What is the name of the woman who cleans the lecture hall?

    I thought it was {#blank#}4{#/blank#} joke. I'd seen the woman many times. She'd been working in the building for at least a year. She is short {#blank#}5{#/blank#} dark hair, in her fifties, and we'd even smiled at each other once or twice. But I didn't know {#blank#}6{#/blank#} (she) name because I'd never thought to ask her. I handed in my test and the last question {#blank#}7{#/blank#} (leave) unanswered-hoping the final result wouldn't be influenced to {#blank#}8{#/blank#} (bad) because of it. But then one student put up his hand. He hadn't {#blank#}9{#/blank#} (finish) the test, either. "I 'm just wondering," he said. "Will it really change my grade if I don't complete that last question?"

    "Certainly," our professor {#blank#}10{#/blank#} (smile). "In your future job..."

    I've never forgotten that lesson. I also learned that the cleaner's name was Sherry.