Drugs can do great harm (危害) not only to you but also to your family. You must be ________ them.[ ]

A. along with

B. out of

C. in front of

D. away from

下列图像能正确反映其对应操作中各量变化关系的是

A．向一定量的稀盐酸中不断加水稀释

B．向接近饱和的食盐水中不断加入氯化钠固体

C．高温煅烧石灰石

D．向两份相同质量的、相同溶质质量分数的稀盐酸中分别加入过量的锌和铁