题目

How to eat healthfully can be especially complex for working women who often have neither the desire nor the time to cook for themselves (or for anyone else). Registered dietitian(营养专家)Barhara Morrissey suggests that a few simple rules can help. “Go for nutrient dense foods，” she suggests, “foods that contain a multiple of nutrients. For example, select whole wheat bread as a breakfast food, rather than coffee cake. Or drink orange juice rather than orange drink, which contains only a small percentage of real juice —the rest is largely coloured sugar water. You just 在化学中有很多规律，下列对规律的应用正确的是A．根据较强酸可制取较弱酸的规律，可向次氯酸钠溶液中通入二氧化碳制取次氯酸B．根据金属与盐溶液混合发生置换反应的规律，可用钠置换出硫酸铜溶液中的铜C．根据酸性氧化物不与酸反应的规律，可用二氧化硅制成的容器盛放氢氟酸D．根据电荷守恒规律，可判断溶液中所含阳离子数目一定等于阴离子数目