夹垛
参考答案：中国传统声乐品种中，经常用来扩展句子成分的手法：用相似的字数、节奏，以密集状态重复一次以上。
I walked in our garden, ______ Tom and Jim were tying a big sign onto one of the trees.
A．which
B．when
C．where
D．that
8086的存储器分为哪两种存储体？
