单项选择题
Pitch variation is known as __________ when its patterns are imposed on sentences.
单项选择题 串操作指令中，源串操作数的段地址一定在（）寄存器中
单项选择题 The function of the sentence ―Water boils at 100 degrees Centigrade is ______.
单项选择题 以下哪项不是开户环节常见的可疑特征（）
