小明编辑了一个电子贺卡(如图所示),他对贺卡中处的文字进行的修饰,它们分别是()。
A.A
B.B
C.C
D.D
参考答案:D
解析:①是倾斜;②是下划线;③是加粗。
The dog had such ______ to his master that it would not leave him, even when he was dead.
A.invitation
B.attention
C.protection
D.devotion
简述加涅的学习层次分类。