合同中，保险责任开始前，投保人要求解除合同的，应当向保险人支付手续费，保险人应当退还保险费。
参考答案：错
一 Good news! Bill won ______ medal in the long jump just now.
一 Really? That's his ______ one at our sports meeting. [ ]
A. a; four
B. an; fourth
C. a; fourth
Stevens-Johnson综合征是下述哪一种疾病的重症型（）
A.银薢病
B.药疹
C.硬皮病
D.多形红斑
E.结节性红斑
