原题
录音 1
Why does the speaker mention a research study that was done in 2007?
ATo explain why astronomers are interested in tardigrades
BTo identify a problem with earlier research on tardigrades
CTo describe the process that tardigrades use to adapt to the vacuum of space
DTo suggest that tardigrades would have difficulty surviving on other planets
正确答案：A
解题思路
老师暂未填写解题思路。