单项选择题

Secretary Leavitt stressed（）in the process of fighting H5N1 bird flu virus.

A．research and development of new medicine
B．new devices of prevention
C．separation of infectors
D．surveillance and information exchange

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热门试题

单项选择题

Why are so many Chinese clothes stored in European customs warehouses（）

A．Because they have exceeded the EU quota limits.
B．Because they are poor in quality.
C．Because they are very expensive.
D．Because they are old-fashione

单项选择题

Some European retailers warned that they would （），if their stock isn't released soon.

A．close their stores
B．resort to legal action
C．take on a strike
D．take some violent actions