In Uganda，a new study has confirmed earlier research linking the spread of sleeping sickness to infected farm animals.The writers of the study have called for stronger rules requiring cattle to be treated before being sold at market.

　　1．The following are the advantages of the new treatment EXCEPT______.

　　A．having an intended effect

　　B．low price

　　C．reducing injections and hospitalization

　　D．no bad side effects

　　2．Which of the following statements is WRONG?

　　A．Nine people in ten infected with sleeping sickness in Africa result from trypanosoma gambiense.

　　B．The invasion of sleeping sickness may lead to death.

　　C．The drug melarsoprol is used to treat patients in the early stage of sleeping sickness.

　　D．There are many disadvantages for the drug melarsoprol to control sleeping sickness.

　　3．It can be inferred from the last paragraph that______.

　　A．farm animals infected by trypanosoma parasite is a main source of sleeping sickness

　　B．all the animals must be get rid of by the government

　　C．there isn’t any rules requiring cattle to be treated before being sold at market in Uganda

　　D．cattle is forbidden to enter the market before being infected by trypanosoma parasite

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