题型:选择题 He was told that it would be at least three more months __________ he could recover and return to work.A.whenB.beforeC.sinceD.that 查看答案
题型:选择题 下列是一些常见食物的pH:苹果2.9-3.3,牛奶6.3-6.6,玉米粥6.8-8.0,鸡蛋7.6-8.0.若某人近期胃酸过多,你认为他近期不适合多食用上述食物中的( )A.苹果B.牛奶C.玉米粥D.鸡蛋 查看答案