55．A．high　　　　　　　　　　 B．deep　　　　　　　　　　 C．hard　　　　　　　　　　 D．far

17

Bird flu is becoming a new threat against human beings as well as birds. 　36　 , as the World Health Organisation (WHO) says, fears 　37　 　worldwide that the bird flu virus could change into a more 　38　 　form. At Shanghai's Pudong International Airport, all 　39　 　leaving or entering must complete a(n) 　40　 　declaration (申报) form that asks if travellers have had close 　41 　with birds or bird flu 　42　 　over the past week.

They will also be screened with a special camera for high 　43　 , and must declare coughing or shortness of 　44　 . People with temperatures over 38 degrees will be further 　　45　 .

At least 68 　46　 　have died from bird flu since 2003. So far, most human cases of the disease are concerned in contact with 　47　 　birds. But experts fear a human flu pandemic (传染病) will break out 　48　 　the deadly bird flu virus changes into a 　49　 　that spread easily between people.

China, which has more 　50　 　than any other country, has called bird flu a "serious pandemic". It has reported 22 outbreaks among birds so far, and three confirmed human cases of bird flu. Two of them died and one was 　51　 .　

The preventive 　52　 , announced in a notice on the Government's website, are similar to those required during the 2003 outbreak of SARS, which - 　53　 　bird flu - spread easily from person to person.

The WHO points out that the main route (途径) of human infection by the bird flu virus is 54　 contact with sick birds, and that transmission from person to person requires very close contact with a sick 　55　 .　

54．A．think　　　　　　　　　 B．care　　　　　　　　　　　 C．miss　　　　　　　　　　 D．realize

53．A．time　　　　　　　　　　 B．labor　　　　　　　　　　 C．article　　　　　　　　　 D．story

52．A．reason　　　　　　　　 B．idea　　　　　　　　　　　 C．point　　　　　　　　　　 D．tip

51．A．a suitable　　　　　　 B．an impressive　　　　 C．a believable　　　　　 D．an unusual

50．A．amount　　　　　　　　 B．set　　　　　　　　　　　　 C．kind　　　　　　　　　　 D．number

49．A．control　　　　　　　　 B．manage　　　　　　　　 C．support　　　　　　　　 D．afford

48．A．at　　　　　　　　　　　　 B．to　　　　　　　　　　　　 C．on　　　　　　　　　　　　 D．with

47．A．paid　　　　　　　　　　 B．similar to　　　　　　　 C．equal to　　　　　　　　 D．worth

46．A．Unless　　　　　　　　 B．If　　　　　　　　　　　　 C．Though　　　　　　　　 D．Before