[解析]
1.A. 细节理解题.根据文章第一段The microorganisms(微生物)from our bodies grow uncontrollably on surfaces of the International Space Station,so astronauts spend hours cleaning them up each week可知国际空间站中的细菌它们很难摆脱;故选A.
2.D. 细节理解题.根据文章第二段HUNCH is designed to connect high school classrooms with NASA engineers可知预感计划的目的是将空间技术与学校教育联系起来;故选D.
3.A. 细节理解题.根据文章第三段' Engineers come and really do an in﹣person review, and.. it's not a very nice thing at times可知NASA工程师为项目中的学生检查他们的产品;故选A.
4.B. 主旨大意题.根据文章最后一段Gordon says his students are emailing daily with NASA engineers about the problem, readying a workable solution to test in space可知课文的最佳标题是空间站:前沿的终极作业;故选B