一束光从水中斜射到水与空气的界面时将发生反射和折射，入射光线及法线已画出．请画出这条入射光线的反射光线和折射光线．
根据拼音写出汉字。lào____ 印 chuī____ 烟 明mèi____ 抽suì____ yíng____ 绕 梳zhuāng____ 狂lán____
— Mum, can you give me some advice on how to behave myself at the table?
— Well, I do have some advice. , please keep quiet while eating.
使人患扁桃体炎、猩红热、丹毒等多种疾病的营寄生生活的是（ ）
