[填空题]A study shows that men who eat tomato products twice a week could probably avoid developing prostate cancer by one - third in comparison with those______.

[填空题]A study shows that men who eat tomato products twice a week could probably avoid developing prostate cancer by one third in comparison with those ______ .

[单项选择]

In a recent study, sedentary middle-aged men who drink more than two cups of coffee a day were found more likely than other sedentary middle-aged men to have a high blood level of cholesterol, which is a factor increasing risk of heart disease. Cholesterol can reach the blood from food and drink but is not contained in coffee.
Which of the following, if true, most seriously weakens a conclusion from the study that for sedentary middle-aged men coffee increases the risk of heart attack（）

A. A sedentary style of life increases levels of cholesterol in the blood
B. Coffee contains caffeine, which acts as a stimulant that increases heart rate
C. The men studied drank their coffee without milk or cream, which contain cholesterol
D. In both groups, the men were likely to be overweight, and excess weight is a factor that increases risk of heart diseases
E. The men who drank more than two cups of coffee a day also ate more foods high in cholesterol

[单项选择]
Men who exercise often are less likely to die from cancer than those who (51) , new research published in the British Journal of Cancer revealed yesterday.
A team of scientists from the Karolinska Institute in Sweden looked (52) the effect of physical activity and cancer risk in 40,708 men (53) between 45 and 79.
The seven-year study found that men (54) walked or cycled for at least 80 minutes a day had a 84 percent lower risk of (55) from cancer than the men who did less exercise or nothing at all. (56) the period studied, 3,714 men developed cancer and 1,153 died from the disease. The researchers suggest that half an hour’s walking (57) cycling a day increased survival among these men by 33 percent.
The researchers surveyed men from two counties in central Sweden about their lifestyle and the amount of (58) activity t
A. don’t
B. didn’t
C. won’t
D. can’t