列重大历史事件中，发生在1453年的是[ ]
A．法国琅城赢得自治
B．拜占廷帝国的灭亡
C．查理·马特的改革
D．日本大化改新开始
答案：B
In the past ten years, the ____mountain climber ____ a lot from his own adventurous _______
A．experienced; experienced; experience
B．experience; experienced; experiences
C．experienced; has experienced; experiences
D．experience; has experience; experience
以颜色命名的外科疾病是：（）
A.颈痈
B.委中毒
C.蛇头疔
D.丹毒
E.破伤风
