[单项选择]

Britain and Spain have the highest proportion of cocaine users in the EU, according to a pan-European drugs survey published today. The European Monitoring Center for Drugs and Drug Addiction 2004 report found 2% of all adults in the UK and Spain reported recent cocaine use, close to figures for the US, compared to less than 1% across the EU as a whole.
It reported that cocaine use was increasing in Denmark and Germany and that more Europeans were seeking treatment for cocaine-related problems. In most countries, treatment is demanded for the use of cocaine powder rather than smoked crack cocaine--but in the Netherlands around two-thirds of cocaine treatment demands were crack related.
Crack use was increasing in a number of cities in Germany, Spain, France and the UK, the survey found.
Heroin use is relatively stable in many EU countries, with new users failing, but limited data from the new member states in central and Eastern Europe may mask localized i
A. Crack use was increasing in a number of cities in Germany, Spain, France and the UK.
B. In most countries, treatment is demanded for the use of crack cocaine.
C. In central and eastern Europe the number of Heroin use is increasing.
D. There may be a deep connection between HIV epidemic and Heroin use.