题目

When you think of what to eat when you're trying to build muscles,fruits may not be the first that comes to mind.But fruits are just as important as any other food.Their potassium（钾）helps make and build muscles,the carbs（碳水化合物）spare your body from burning your muscles for fuel and the antioxidants（抗氧化物）protect the muscles from damage. Potassium builds muscles.You need enough potassium in your diet to help build muscles.Adults need 4,700 milligrams of potassium a day.Any fruit can help you meet your daily potassium needs,but be sure to include those that ar在下列物质中，化学键类型相同的一组是  A．CO2和H2O      B．NaCl和HCl     C．CCl4和KCl     D．MgCl2和SO2