题目内容
当一种新疗法只能延长寿命而不能治疗 时,这样
2022-01-04
A.该病的患病率会降低
B.该病的发病率会升髙
C.该病的患病率会升髙
D.该病的发病率会降低
E.该病的发病率和患病率均降低
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