When Jack Davis, 9, looks up at the night sky, he doesn’ t see just the stars. He sees his future. The fourth grader from New Je

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问题    When Jack Davis, 9, looks up at the night sky, he doesn’ t see just the stars. He sees his future. The fourth grader from New Jersey has a deep interest in outer space and the alien (外星的) beings he thinks might live there.
   In July, Jack heard that NASA was looking for a new planetary protection officer and decided he was the right person for the job. The position, which focuses on preventing astronauts from accidentally bringing extremely small, potentially dangerous alien life-forms back to Earth and ensuring that astronauts do not take Earth-based germs with them into space, pays from $124, 406 to $187, 000 per year.
   Jack wrote a letter to NASA, noting his qualifications for the job. " My sister says I am an alien, " Jack wrote, pointing out that since he is young, he can "learn to think like an alien". He signed the letter "Jack Davis, Guardian of the Galaxy".
   Within days, Jack received a personal letter from NASA’ s planetary science director, James L. Green. "We are always looking for bright future scientists and engineers to help us, " Green wrote. "I hope you will study hard and do well in school. We hope to see you here at NASA one of these days!"
   Jack said he was "shocked" when Green’ s response arrived. "I shouted, I got a letter from NASA!"
   Green says he loves to answer letters from children. He calls his response a "gravity assist". Spacecraft use gravity assistance from objects like planets and moons to help power the craft toward another celestial(天上的)body. Green hopes a reply can influence a person’ s path in life in a similar way.
In this letter, Jack explains that his strength lies in his______.

选项 A、personality
B、appearance
C、hobby
D、age

答案D

解析 推理题。根据文章第三段第二句可知,杰克说,因为他年轻,所以他可以“学着像外星人一样思考”,因此他的长处在于他的年龄,选项D(年龄)符合文章意思。选项A(性格)、选项B(外表)、选项C(爱好)都不符合文章意思。故本题选D。
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