早晨的学习效果一般较好，这是因为这一阶段的学习不受（）的干扰。
A.前摄抑制
B.倒摄抑制
C.单一抑制
D.双重抑制
参考答案：A
－Tom didn’t go to school this morning, did he?
－______. Though he had a bad cold.
A．Yes, he didn’t
B．No, he did.
C．Yes, he did.
D．No, he didn’t
子宫肌壁间肌瘤的临床表现是经量增多，经期缩短。
