SECTION B PASSAGES
Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.
听力原文： A study has found that almost half of all unnatural deaths are related to alcohol. Research carried out by doctors in Sweden suggests that 44 % of deaths caused by accidents or other events are linked to drinking. These include deaths from suicide, falls, traffic injuries and murder.
The doctors examined deaths in Sweden over a five-year period. They divided deaths into natural ones that were caused by disease or illness and unnatural ones that were event-related. (15)They found that 29% of all unnatural deaths were associated with alcohol.
However, they estimated that the figure may be as high as 44 % and may be even higher in countries with "softer" alcohol laws than in Sweden.
Scientists say the sober person does not take the same risks and, to some extent, can avoid dangers and risks. Alcohol blurs your mind and it is well-known that both self-destructive behavior. and aggression towards other people are much higher under the influence of alcohol than during sobriety.
The study demonstrates that alcohol is a problem not only when it comes to drunk driving and traffic deaths, but in a significant number of all unnatural deaths. This means that you run a greater risk in almost all aspects when you are under the influence of alcohol. Sue Boon, assistant director of Alcohol Concern Association, said she was not surprised by the findings.
The five-year survey in Sweden revealed ______of unnatural deaths were associated with alcohol.

A. 29%
B. 44%
C. almost 50%
D. 56 %