现如今电动自行车已广泛的走入我们的家庭，它的核心部件主要是蓄电池和电动机．电动机里的线圈在通电时由于受 ____转动，从而带动人和车前进
Mrs Smith had to ______ her father day and night because he was seriously ill.
——It's a __________day today. Let's go _________.
——Great. Let's go.
下列字母中不是轴对称图形的是（ ）
