太空探索相关词汇 — 英语词汇题
题目
根据首字母和中文提示补全单词：1. The rocket was l__nched（发射）into space last night. 2. An a__tron__ut（宇航员）must be very healthy. 3. The moon is a natural s__tell__te（卫星）of the earth. 4. S__ient__sts（科学家）are studying Mars. 5. They walked in g__avit__（重力）much lower than that on the earth.