问题：
[单选题] 回答{TSE}题:Exercise Being Good or BadCan exercise be a bad thing? Sudden death during or soon after strenuous exertion on the squash court or on the army training grounds, is not unheard of. 51 t
参考答案：
D
● 参考解析
【解析】句意为：__________是受过训练的马拉松长跑运动员也不能避免致命的心脏病突发。四个选项：then“然后”；though“虽然”；since“自从，既然”；even“甚至，即使”。
