题型：填空题 题类：真题 难易度：普通
Plenty of people dream of going to Mars（火星）． different from those people, 13-year-old Alyssa Carson has been working (happy) for that dream since the age of 4，according to a new report which (make) by the BBC not long ago.
Alytsa tells the BBC,“I hope (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 (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 year of 2033.“We are proud her,”he says.“We have the next eighteen (year) planned out.”One of those plans is Alyssa attending the International Space University.
Of course，Alyssa's dream could come with (big) sacrifices（牺牲）than others.[If Alyssa goes to mars，maybe 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.
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