题目内容：

You may hear about 12 people who have walked on the moon. Of the outstanding astronauts listed below, who do you think was the most influential in Humans’ history?

Neil Armstrong (Space Flight: Apollo 11; Time on Moon: 21h 31m 20s)

Armstrong’s biggest moment came in 1969, when he was chosen for NASA’s first manned lunar mission (任务). On July 21, 1969, he set foot on the surface of the moon, which made him the first human to do so. After returning, Armstrong became an international icon(偶像) and was honored worldwide. His words also impressed the world.

Pete Conrad (Space Flight: Apollo 12; Time on Moon: 31h 31m 12s)

•During his childhood, Pete suffered from dyslexia (读写困难）. He failed in the 11th grade and had to leave school. Then he joined Darrow School, where he performed so well that he won a Naval Reserve Officers Training Corps (NROTC) scholarship. Before joining NASA, Pete was a fighter pilot. He was chosen as the commander of Apollo 12, and landed on the moon on Nov 19, 1969.

Edgar Mitchell (Space Flight: Apollo 14; Time on Moon: 1d 9h 30m 29s)

Edgar was selected by NASA, in 1966, and was later made the lunar module (分离舱) pilot of Apollo 14. He followed his commander Alan Shepard onto the moon, becoming the sixth person to do so. Edgar has expressed his firm belief that UTOs belong to other planets. He also firmly believes that the US government is in possession of some “recovered alien bodies”, and is covering up this issue so that the truth doesn’t come out.

John Young (Space Flight: Apollo 16; Time on Moon: 2d 23h 02m 13s)

Young was made the commander of Apollo 16, which landed on the moon on April 16, 1972. He was the ninth person to set foot there. John was chosen as the commander of the first space shuttle flight in 1981. Young retired from NASA after serving for around 42 years, which made him the man ever to work for NASA for the longest time.

1.What was Neil Armstrong noted for in history?

A. Being a famous international hero.

B. Being the first to walk on the moon.

C. Being the first astronaut of NASA.

D. Being respected the people worldwide.

2.What was Edgar Mitchell’s firm belief?

A. America has known some secrets of aliens.

B. Humans should be cautious about UFOs.

C. Much truth about aliens should be made public.

D. UFOs had set foot on the moon before humans’ arrival.

3.Who stayed on the moon for the longest time?

A. Neil Armstrong.    B. Pete Conrad.

C. Edgar Mitchell.    D. John Young.

4.What do the four astronauts have in common?

A. They were honored all over the world.

B. They all set foot on the moon in the 1960s.

C. They were members of NASA’s Apollo program.

D. They retired shortly after they returned to the earth.