美国国会预算办公室（CBO）估算显示，白宫推出的“大而美法案”存在争议：该政策将致使最贫困的美国人每年损失约1600美元，而最富有家庭的年收入则平均增加1.2万美元。

KIGALI, June 26 (Xinhua) -- China's Juncao cultivation technology has accelerated mushroom farming in Rwanda, helping families fight malnutrition and generate income, local farmers said at an ongoing ...