题目

Eyesight plays a very important role in our daily life. Every waking moment，the eyes are working to see the world around us. Over forty per cent of Americans worry about losing eyesight，but it's easy to include steps into our daily life to ensure healthy eyes. Here are five suggestions for a lifetime of healthy eyesight： Schedule yearly exams.  36  Experts advise parents to bring babies 6 to 12 months of age to the doctor for a careful check. The good news is that millions of children now can have yearly eye exams and following treatment, including eyeglasses. Protect against下列反应的离子方程式书写正确的是（　　）A．硫酸氢钾溶液与氢氧化钠溶液反应：H++OH-=H2OB．稀硫酸与铁粉反应：2Fe+6H+=2Fe3++3H2↑C．氢氧化钡溶液与稀硫酸反应：Ba2++SO42-=BaSO4↓D．碳酸钙与盐酸反应：CO32-+2H+=H2O+CO2↑