In early space programs, such as the Apollo missions of the 1960s and 1970s, and in the Space Shuttle missions today, scientists developed objects for the astronauts to use on the moon and in space.

2017年12月四级真题（第二套）听力 Section C

Much of it was left by American astronauts who landed on the lunar surface between 1969 and 1972 during NASA's Apollo missions.

2018年12月四级真题（第二套）听力 Section C

The equipment stayed there after its missions ended.

2018年12月四级真题（第二套）听力 Section C

The other rubbish comes from missions that did not have human cruise.

2018年12月四级真题（第二套）听力 Section C

These missions were conducted by various space exploring agencies including those from the US, Russia, Japan, India and Europe.

2018年12月四级真题（第二套）听力 Section C

There was no grand follow-up to the Apollo missions.

出自-2013年12月阅读原文

The man is well informed about the space shuttle missions.

出自-2011年12月听力原文

Multiples can be deployed in combination for more complex missions than could be achieved by one CubeSat alone.

2019年6月六级真题（第三套）阅读 Section B

They're primarily designed for Low Earth Orbit(LEO) an easily accessible region of space from around 200 to 800 miles above Earth, where human-tended missions like the Hubble Space Telescope and the International Space Station(ISS) hang out.

2019年6月六级真题（第三套）阅读 Section B