电影院放映厅的墙壁上都被装修成坑坑洼洼的，俗称“燕子泥”，其目的是为了[ ]
A.防止声音发生振动
B.减弱回声
C.增强回声
D.为了装饰剧场
答案：B
Mary was much kinder to Jack than she was to the others, ___, of course, made all the others upset. [ ]
A. who
B. which
C. what
D. that
关于休克型肺炎的治疗，下列哪项不合适
A．可用低分子右旋糖酐或平衡盐液
B．适当应用血管活性药物
C．输液速度要快，以尽快补足血容量
D．增加抗生素剂量
E．酌情应用糖皮质激素
