问题补充:
22. Food aid is the key to the problem now.
A. only, solve, discussed
B. alone, solving, being discussed
C. merely, solving, being discussed
D. alone, solve, being discussed
答案:
A. only, solve, discussed
(答案→)B. alone, solving, being discussed
C. merely, solving, being discussed
D. alone, solve, being discussed
解析:可联系答.案.网客服索取。