问题补充:
Whether enough blood is donated could be a(an) of life and death for the accident victims.
A. concern
B. approach
C. affair
(答案)D. matter
答案:
@@A. concern@@B. approach@@C. affair@@(答案)D. matter
解析:题目意思是“是否有足够的血液被捐献是事关生死的事情”,a matter of life and death的意思是“生死攸关的事”。