单选题 His ______ speech about the life and work of Mother Teresa touched the hearts of millions of people around the world.
【正确答案】 B
【答案解析】[解析] 词汇：形容词
1．这是一道词汇题，选项均为形容词。
2．eloquent speech意为“有说服力的演讲”，B为正确选项。有powerful speech这种表达，但D选项powered不符合题意。