A、There is no effective system. B、Criminals are producing better methods. C、More and more forged medicines appear in the market.

The World Health Organization (WHO) says more effort is needed to stop the trade in forged medicines. Acting as a coordinating authority on international public health, the United Nations health agency says countries must work together to fight the growing threat from drugs that are not what they seem. WHO officials discussed the problem during a recent high-level meeting in Rome. Delegates at the conference included representatives of government agencies, consumer groups and the drug industry. Forged medicines trick people into believing they are taking something that will make them well. Instead, it might make them sicker or even kill them. The World Health Organization says forged medicines are present in all countries. Experts point out the problem is worst in developing countries. Forged medicines are thought to represent 10 percent of drug sales worldwide. A group in the United States estimates that profits from forged drug sales will reach 75 billion dollars by 2010. The Center for Medicines in the Public Interest estimated the profits last year at almost 40 billion dollars. WHO official say identifying forged medicines is getting more difficult. Criminals are improving their methods. Representatives at the meeting in Rome agreed to creat e an international expert group. Among its duties, the new group will try to strengthen national laws and establish better systems to identify forged drugs.
Questions 33 to 35 are based on the passage you have just heard.
33. What did WHO officials discuss during a recent high-level meeting in Rome?
34. Where is the problem of forged drugs worst according to experts?
35. Why is it becoming increasingly difficult to identify forged medicine?