单项选择题

Questions 7 and 8 are based on the following news. In the US, the rise of heroin production in Mexico in 2008 resulted in

A．lower heroin prices.
B．rapid grow of drug trade.
C．more diseases.
D．widespread drug activists.
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单项选择题
According to the news item, the potential treatment for sleeping sickness
A．was identified by British experts.
B．has been put into service for 18 months.
C．has not fully been developed so far.
D．is taken by injection.
单项选择题
What do we learn about NCLB
A．It proves to be a perfect educational program.
B．It doesn’t focus on test scores in reading and math.
C．It has negative effects on subjects not tested.
D．It has results in constantly tested subjects as expecte
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