[单项选择]Sub-Saharan Africa has the world’s highest hunger rate. The United Nations says 30 percent of the people were undernourished(营养不足) last year. (67) a new report says African farmers also have (68) that could help the world fight hunger and poverty.
Danielle Nierenberg from the Worldwatch Institute in Washington spent a year (69) 25 countries south of the Sahara. In Nairobi, Kenya, for example, Ms. Nierenberg (70) women farmers growing vegetables just outside their doorsteps in the Kibera settlement. The women use old sacks (71) with soil. They cut holes in the sides of the tall bags so air (72) to the seeds. The women feed their families and sell their (73) . They use the money to send their children to (74)
Last year, an (75) 925 million people (76) did not get enough to eat. Half of all people in the world now live in and (77) cities. Researchers like Ms. Nierenberg are looki

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