2. 考研
  3. The ______ of lung cancer is particularly high among long-term heavy smokers, especially chain smokers.

The ______ of lung cancer is particularly high among long-term heavy smokers, especially chain smokers.

admin2005-07-06  87
问题 The ______ of lung cancer is particularly high among long-term heavy smokers, especially chain smokers.
选项 A、incident
B、accident
C、incidence
D、evidence
答案C
解析 需填入肺炎的发病率。
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