问题详情

The passage aims to inform. us that______.

A．the U-Md. -Goddard program offers professors and students good opportunities

B．undergraduate and graduate students learn better when doing projects together

C．NASA shows special preference towards U-Md. for its short distance from Goddard

D．everyone, with or without special training, can contribute to the research of space

请帮忙给出正确答案和分析，谢谢！