[填空题] Two more people have died of the H5N1 strain of bird flu in China, making the death toll five out of eight human cases (36)________ so far in the country. The Ministry of Health has announced Wednesday the two (37)________, first reported last month, were a 10-year-old girl in the southern Guangxi Zhuang Autonomous Region and a 35-year-old man in eastern Jiangxi Province. They had died on December 16th and 30th (38)________ after all medical treatment measures failed. A (39)________ for the Ministry says the current bird flu situation is "not optimistic", and is calling on people to remain (40)________. "Although there hasn’’t been any human-to-human case of bird flu reported so far, as the danger of bird flu not only exists in China but also threatens other countries, (41)________ to prevent and control the epidemic must be (42)________ . " Among the eight human cases of bird flu in China, the (43)________victim is a six-year-old boy from Central China’’s Hunan Province, who

[填空题] Two more people have died of the H5N1 strain of bird flu in China, making the death toll five out of eight human cases (36)________ so far in the country. The Ministry of Health has announced Wednesday the two (37)________, first reported last month, were a 10-year-old girl in the southern Guangxi Zhuang Autonomous Region and a 35-year-old man in eastern Jiangxi Province. They had died on December 16th and 30th (38)________ after all medical treatment measures failed. A (39)________ for the Ministry says the current bird flu situation is "not optimistic", and is calling on people to remain (40)________. "Although there hasn’’t been any human-to-human case of bird flu reported so far, as the danger of bird flu not only exists in China but also threatens other countries, (41)________ to prevent and control the epidemic must be (42)________ . " Among the eight human cases of bird flu in China, the (43)________victim is a six-year-old boy from Central China’’s Hunan Province, who

[填空题]Far more languages have died out in modem times than ever before.

[填空题] Avian flu or H5N1 has infected more than a hundred people so far in at least ten countries. The virus in Asia is killing more than 50% of the humans infected. If this virus learns to (36) ______human to human and (37)______that level of killing humans, we’’d got a global (38)______. Under (39)______ microscope, flu viruses look like spiky creatures. H5N1 may seem unassuming in the lab, but be sure it has ability to cause a public health (40)______. In fact experts say that H5N1 (41)______ strain responsible for the 1918 Flu pandemic. That strain mutated to (42)______ between people and (43)______. killed as many as 15 million around the world. (44)____________. But scientists warn that H5N1 could change to become an explosive killer. (45)____________ Here’’s what I mean. Let’’s say that the chicken farmer has the regular flu which always spreads like a wild fire from person to person. Then he gets infected with H5N1 from one of his chickens. Now both viruses are in the cells wh