单项选择题
A. The regional governments need to boost its social protection programs. B. The regional governments put money on rural infrastructure. C. Both A and B． D. None of the above.
A. WHO raised the pandemic flu alert to level 6. B. H1N1 spreads quickly around the world. C. WHO requires all countries launch pandemic-prevention plans. D. H1N1 is going to infect more and more people.
A. DNA testing should be systematized B. only authorized laboratories can conduct DNA testing C. the academy only is authorized to work out standards for testing D. the academy has the right to accredit laboratories for DNA testing