【单选题】

Drunken driving has become a national (31) .Every hour of every day about threeAmericans on average are killed by drunken drivers, adding (32) to an incredible 250,000 over the past decade.

A、drunken driver is defined as one with 0.10 blood alcohol (33) or through three beers, glasses of wine or (34) of whisky drunk within two hours. Heavy dinking used to be a (an) (35) part of theAmerican macho image and judges were lenient in most courts, but the drunken (36) Zhas recently caused so many well-publicized tragedies, especially involving young children, (37) public opinion is no longer tolerant.
Twenty states have raised the (38) drinking age to 21.After New Jersey lowered it to 18, the number of people killed by 18-to-20-year-old drivers more than (39) , so the state recently upped it back to 21.
Reformers fear (40) the drinking age will have little effect unless accompanied by educational (41) to help young people to resist (42) pressure to drink.
Tough new laws have led to incredible arrests and tests and, in many areas already, to a marked (43) in fatalities. Some are also penalizing bars for (44) customers too many drinks.A、tavern in Massachusetts was (45) for serving six or more double brandies to a customer who was " (46) intoxicated" and later drove off the road, killing a nine-year-old boy.
(47) the fatalities continue to occur in every state, someAmericans are even beginning to speak well of the 13 years of national (48) of alcohol that began in 1919, what President Hoover called the "noble (49) ". They forget that legal prohibition didn’t stop drinking, but encouraged political corruption and organized crime.As with the booming drug trade generally, there is no easy (50) .
A．descent
B．induction
C．reduction
D．decline