额中回后部（）
A．运动性语言中枢
B．听觉性语言中枢
C．书写中枢
D．视觉性语言中枢
E．内脏运动中枢
参考答案：C
—I expected him to be nervous before his speech, but he was as cool as a cucumber.
—He _______ it carefully.
A．could have prepared
B．shouldn’t have prepared
C．must have prepared
D．can’t have prepared
内痔母痔区的部位是：（）
A.齿线上截石位3、7、11点
B.齿线上截石位6、12点
C.齿线上截石位3、9点
D.齿线上侧卧位3、7、11点
E.齿线上膝胸位3、7、11点
