A：be back on his feet
B：get to his feet
C：jump to his feet
D：struggle to his feet
我们在感叹时光流逝时，往往会说“光阴似箭，日月如梭”。 《兰亭集序》中有一句相似的感叹：____，____。
化学与人们的生产、生活息息相关．下列有关说法正确的是（ ）
