题目内容：

A Vietnamese(越南的 ) man has just died of bird flu. So far, 19 people____1.___(die) because of the disease. A team of experts from Hong Kong has arrived in Vietnam for___2.___(meet) with local health officials and the WHO( 世界卫生组织), trying to find out how _____3.___(stop) the disease.

The experts said 70% of people who have had bird flu in Asia have died. The number is about twice as that in 1997 in Hong Kong. One expert said the bird flu __4.____(seem) to be much more serious than before, and many cities ___5.___(affect感染). He also said that it was still not___6.___(know) why this disease was so serious and why only patients in two countries had died.

He said that in 1997, the bird flu ___7.____(appear) in Hong Kong, only 6 people were killed. This time, the disease____8._____ (find) in 11 countries.

Japan has stopped importing( 进口 )chicken from the US because bird flu was found in Delaware. Japan was trying ___9.____(confirm 证实 )the disease in Delaware. If the disease is not harmful to people, it __10.______( import进口) chicken from the US.