【判断题】Many bioethical and research groups believe that research using gene editing in embryos is important for myriad reasons, including to address scientific questions about human biology, as long as it is...
【单选题】It is a revolutionary research tool with dramatic medical implications, thorny bioethical conundrums, an awkward patent spat and oating over it all, billion-dollar commercial implications for medicin...
A.
having many thorns or thorn bushes
B.
causing distress, di culty, or trouble
C.
continuously uneasy, especially in fear of being detected