根据材料，完成题。 The Population Situation in India With 950 million people, India ranks second to China among the most populous countries. But since China51a family planning program in 1971, India has been closing the gap. Indians have reduced their birth rate but not nearly.52the Chinese have. If cmrrent growth rates continue, India&39;s population will53China&39;s around the year 2028 at about 1.7 billion. Should that happen, it won&39;t be the54of the enlightened women of Kerala， a state in southern India.While India as a whole adds almost 20 million people a year, Kerala&39;s population is virtually55. The reason is no mystery : nearly two-thirds of Kerala women practice birth control, 56about 40% in the entire nation. The difference57the emphasis put on health programs, including birth control, by the state authorities, 58in 1957 became India&39;s first elected Communist government. And an educational tradition and matrilineal (母系的) customs in parts of Kerala help girls and boys get59good schooling. While one in three Indian women is60,90% of those in Kerala can read and write. Higher literacy rates61family planning. "Unlike our parents, we know that we can do more for our children if we have62of them, " says Laial Cherian, 33, who lives in the village of Kudamaloor. She has limited herself63three children-one below the national64of four. That kind of restraint ( 抑制，克制) will keep Kerala from putting added65on world food supplies. 请在第__（51）__处填上正确答案。 查看材料