【正确答案】 B

【答案解析】[解析] 13-15
More than six thousand people died last year in Mexico's drug wars. So far this year the violence has only gotten worse. More than one thousand people have already been killed. Police have become common targets, especially in border cities in northern Mexico.
Criminal organizations are competing for control of drug trafficking into the United States. The American State Department has warned travelers about border areas. But there is some evidence that the violence is spreading to other parts of Mexico.
Last month, gunmen kidnapped a retired army general in a beach city popular with American college students on spring break. The general was tortured and killed just days after he arrived in the city to fight corruption in the local police.
Mexican organized crime groups not only sell drugs in the United States. They also use some of the money to buy high-powered weapons in the United States and bring them back into Mexico.
United States officials say the growing violence shows progress by the Mexican government in fighting the drug trade. Its efforts, they say, have led the criminal groups to battle each other for decreasing profits.
U.S. lawmakers have urged the Obama administration to increase efforts to help Mexico crush the drug groups.
A house representative from California noted that Mexico has now deployed forty-five thousand troops--around the same number as the United States has in Afghanistan.