问题
选择题
their final medical check, the astronauts boarded their spacecraft．
A．Received
B．Being received
C．To receive
D．Having received
答案
答案：D
考查非谓语动词作状语。the astronauts 与receive 之间是主动关系，所以用现在分词，又知receive的动作发生在boarded之前，所以用现在分词的完成式，句意：收到最终的医疗检查之后，宇航员们登上了他们的宇宙飞船。所以选D。