题目内容：

    Last year, Wolf Cukier, who is 17 years old, spent his summer vacation as few other rising seniors have：he helped discover a planet-TOI 1338b, the newly identified world orbiting two stars which are more than 1, 300 light years away.

Last July， just after he finished his junior year at Scarsdale High school in Scarsdale, New York, Wolf started an internship(实习期) at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

During the first week of the internship, as be combed through data that had been flagged by citizen-scientists. he fixed attention on s system that included two orbiting stars. He identified a body in that system that was later proved as a planet about 6.9 times as large as Earth. while knowing this inspiring discovery, his colleagues immediately gave the system a name, TOI 1338b.

According to scientific research, any dip in the brightness of a single star is a good indication that a planet has crossed in front of it. However, TOI 1338b was particularly complicated because it involved two stars-a large star ere the planers track was easy to detect, and a smaller one where the planet's track was so small that it was not observable.

Many people think that wolf is a lucky dog, but as a matter of fact, it is not just a coincidence. When he studied in Junior High School, he had shown great passion on astronomy and was devoted to studying it. Wolf plans to study astrophysics(天体物理学) when he starts college in September. When it came to his contribution to the discovery of the new world. he emphasized it was the team work in the verification process rather than his own effort that counted.

1.What did Wolf do last year?

A.He was employed by NASA.

B.He finished his senior year in High School.

C.He spent his summer vacation like other seniors.

D.He helped find a new planet named TOI 1338b.

2.How can we describe Wolf？

A.Modest and hardworking. B.Ambitious and casual.

C.Considerate and lucky. D.Optimistic and helpful.

3.What can be inferred according to the text?

A.The planet was named by Wolf.

B.The planet is the same size as the Earth.

C.The planet was easy to discover as there are two stars involved.

D.Team work in the verification process was highly valued by Wolf.

4.Where is this text most likely from?

A.A diary. B.A magazine.

C.A guidebook. D.A scientific novel.