[单项选择]

　　Passage 3 　　Questions 11 to 15 are based on the following passage: 　　(79)Extensive new studies suggest that the world has made extraordinary progress in reducing poverty in recent decades. The research suggests that the pace of economic progress has been rapid and continued for decades, built on the foundations of relative political stability, rising trade, and economic liberalization(自由化)after two world wars. One new study, published recently by the Institute for International Economics in Washington, find that the proportion of the 6.1 billion people in the world who live on $1 a day or less shrank from 63 percent in 1950 to 35 percent in 1980 and 12 percent in 1999. by some other measures, the progress has been more modest. Still, economists agree that poverty has plunged in key nations such as India and especially China, thanks to slowing population growth as well as economic freedom. "This is a huge success for the world as a whole," says Harvard University econo
A. decreased
B. climbed
C. increased
D. dropped into water