There's a park _____ we can have a rest.[ ]
A. that
B. where
C. which
D. when
答案:B
胃镜检查常见的并发症有()
A.低氧血症
B.肿瘤转移
C.术后腹泻
D.心跳骤停
E.食管、胃肠穿孔
用于病因性预防疟疾的药物是()
A.氯喹
B.青蒿素
C.奎宁
D.乙胺嘧啶
E.伯氨喹