WHAT DOES THE PASSAGE MAINLY DISCUSS
11. What does the passage mainly discuss?
A. risk factors in heart attacks
B. seasonal and temporal patterns of heart attacks
C. cardiology in the 1980s
D. diet and stress as factors in heart attacks
11. What does the passage mainly discuss?
A. risk factors in heart attacks
B. seasonal and temporal patterns of heart attacks
C. cardiology in the 1980s
D. diet and stress as factors in heart attacks