南极大陆矿产资源比较丰富，其中最为丰富的是[ ]
A．煤铁
B．固体淡水
C．石油
D．天然气
答案：A
传染病的治疗中哪一项最重要（）
A.支持疗法
B.对症治疗
C.病原治疗
D.调节免疫功能的治疗
E.康复治疗
— Arthur is responsible ______ the newspaper, isn't he?
— ______, but Joyce is. She's the chief editor. [ ]
A. of...Yes, he isn't
B. for...Yes, he is
C. of...No, he is
D. for…No he isn't
