The researchers noted that lifestyle and dietary habits play a major role in secondary prevention of cardiovascular disease （CVD），but that the impact of alcohol consumption on patients' prognosis remains unclear. "While light-to-moderate alcohol consumption is associated with a lower risk of developing multiple cardiovascular outcomes in general population groups，it's difficult to extend the supposed cardio-protective effects to CVD patients because of their typically older age and compromised vasculature as well as the medications they take to prevent secondary events，" researchers wrote. Among the patient sample，former drinkers were separated from current drinkers，with the latter being broken into three groups of low-level drinkers，medium-level drinkers and high-level drinkers.Patients were followed until either their death or first detected heart-related diseases. An analysis of three major cohorts together with those from 12 published studies found J-curve relationships between alcohol consumption and mortality in those with cardiovascular disease.The greatest reduction in all-cause mortality was found among patients with light alcohol consumption. "In summary，our study shows an alcohol intake up to about 105 g a week is associated with lower risks of both mortality and subsequent cardiovascular events among CVD patients，" the team wrote. The research team warned that the study had limitations and that current drinkers may not need to stopdrinking for secondary prevention of cardiovascular disease，but rather be informed that lower levels of consumption may be associated with reduced risks.Patients who are non-drinkers，however，should not be encouraged to take up light drinking.（1）Why does the author mention the figure in paragraph 1 ？ ____ A.To emphasize the number of patients.B.To show the reliability of the research.C.To stress the importance of the sample.D.To prove the risk of alcohol consumption.（2）What did the researchers do in their experiment ？ ____ A.They published twelve relevant papers.B.They conducted the study by categorizing.C.They followed the CVD patients until they died.D.They applied their findings to the CVD patients.（3）What is the author's attitude toward the result of the study？ ____ A.Doubtful.B.Objective.C.Positive.D.Critical.（4）Which of the following is a suitable title for the text？ ____ A.lcohol drinking contributes to heart diseases.B.Heart disease patients need popular dietary habits.C.Proper alcohol intake may benefit CVD patients.D.Alcohol helps reduce the risks of heaving diseases.

Light-to-moderate alcohol consumption may offer some protective benefits for patients with heart disease，a new study suggests.The research pulled data from a combined sample field of 48，423 patients，thousands of whom had history of heart-related diseases.
    The researchers noted that lifestyle and dietary habits play a major role in secondary prevention of cardiovascular disease （CVD），but that the impact of alcohol consumption on patients' prognosis remains unclear. "While light-to-moderate alcohol consumption is associated with a lower risk of developing multiple cardiovascular outcomes in general population groups，it's difficult to extend the supposed cardio-protective effects to CVD patients because of their typically older age and compromised vasculature as well as the medications they take to prevent secondary events，" researchers wrote.
    Among the patient sample，former drinkers were separated from current drinkers，with the latter being broken into three groups of low-level drinkers，medium-level drinkers and high-level drinkers.Patients were followed until either their death or first detected heart-related diseases.
    An analysis of three major cohorts together with those from 12 published studies found J-curve relationships between alcohol consumption and mortality in those with cardiovascular disease.The greatest reduction in all-cause mortality was found among patients with light alcohol consumption. "In summary，our study shows an alcohol intake up to about 105 g a week is associated with lower risks of both mortality and subsequent cardiovascular events among CVD patients，" the team wrote.
    The research team warned that the study had limitations and that current drinkers may not need to stop
drinking for secondary prevention of cardiovascular disease，but rather be informed that lower levels of consumption may be associated with reduced risks.Patients who are non-drinkers，however，should not be encouraged to take up light drinking.

（1）Why does the author mention the figure in paragraph 1 ？ ____
A.To emphasize the number of patients.
B.To show the reliability of the research.
C.To stress the importance of the sample.
D.To prove the risk of alcohol consumption.
（2）What did the researchers do in their experiment ？ ____
A.They published twelve relevant papers.
B.They conducted the study by categorizing.
C.They followed the CVD patients until they died.
D.They applied their findings to the CVD patients.
（3）What is the author's attitude toward the result of the study？ ____
A.Doubtful.
B.Objective.
C.Positive.
D.Critical.
（4）Which of the following is a suitable title for the text？ ____
A.lcohol drinking contributes to heart diseases.
B.Heart disease patients need popular dietary habits.
C.Proper alcohol intake may benefit CVD patients.
D.Alcohol helps reduce the risks of heaving diseases.