48（）
A. Second, I could lower my blood cholesterol level simply by changing what I ate.
B. I was three years old at that time.
C. There is not enough oxygen in the blood.
D. It was a heart attack just waiting to happen
E. The trial was designed to test the effect of lowering blood cholesterol on the risk of heart disease.
F. The death rate for the test was only 1 in 100, I was assured.
微信支付 
支付宝支付