说出下列句子的修辞手法
正想转回身去，钻进耳朵里的枪炮声中，似于夹杂着一种若有若无的咝（sī）咝的声音。
比喻
动物激素和植物激素（ ）
At the beginning of the 20th century, many people thought that the family was falling apart—__________, they thought it was dying． （ ）
