【判断题】Proper lesson planning is essential only for novice teachers not for experienced teachers because the latter are already very familiar with what they are teaching and how they teach.
【单选题】如图是硫酸试剂瓶标签上的部分内容。据此下列说法中,正确的是 ( ) A .该硫酸可以用来干燥硫化氢气体 B . 1 mol Zn 与足量的该硫酸反应能产生 2 g H 2 C .配制 250 mL 4.6 mol·L - 1 的稀硫酸需取该硫酸 62.5mL D .若不小心将该硫酸溅到皮肤上,应立即用 NaOH 溶液冲洗