Everything we eat and drink contains some salt; we can meet the body's need for it from natural sources without turning ________ the salt bottle.
句意：我们吃喝的一切东西中都含有一些盐；我们可以从天然食物中满足人体对盐的需求，无需使用盐罐。turn to求助于；转向。turn up出现；发生。turn on打开；发动。turn over移交给；反复考虑。