问题
单项选择题
·Look at the questions for this part.
·You will hear a passage about "American Weighs In ". You will listen to it twice.
·For questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response.
·Mark one letter A, B, or C on the Answer Sheet.
Koop once launched an assault on ______.
A．chronic ailments
B．obesity
C．smoking
答案
参考答案：C