The International Red Cross is ______ non-profit organization that cares for the wounded, sick and homeless in wartime, and victims of _____ natural disasters. A. the; the B. a; the C. the; 不填 D. a; 不填 答案:D 解析: 略在下列各组线段中,不能构成三角形的是
[ ]A.5,7,10 B.7,10,13 C.5,7,13 D.5,10,13