题目内容：
根据以下材料回答：Scientists around the world are racing tolearn how to rapidly diagnose, treat and stop the spread of a new, deadlydisease. SARS--Severe Acute Respiratory Syndrome--was 62 forthe first time in February 2003 in Hanoi, 63 since then has infected more than 1,600people in 15 countries, killing 64 At this 64 ,there are more questions thananswers surrounding the disease.
Symptoms start 65 a fever over 100. 4 degrees F, chills, headache or body66 Within a week, the patient has a dry
cough,which might 67 to shortness of breath. In 10% to 20%of cases, patientsrequire 68 ventilation to breathe. About 3.5%die from the disease.Symptoms 69 begin in two to seven days, but some reports suggest it 70 takeas long as 10 days. Scientists are close to 71 a lab test to diagnose SARS. In the meantime, it isdiagnosed by its symptoms. There is no evidence 72 antibiotics or anti-viral medicineshelp, 73 doctors can offer only supportive care.Patients with SARS are kept in isolation to reduce the risk of 74 . Scientists aren't sure yet, but some researchersthink it's a 75 discovered coronavirus, the family of virusesthat cause some common colds.
Most cases appear to have been passed 76 drop lets expelled when infected patients coughor sneeze. Family members of infected people and medical workers who care 77 them have been most likely to 78 the illness. But recentdevelopments in Hong Kong suggest that the 79 mightspread through air, or that the virus might 80 fortwo to three hours on doorknobs or other 81 Health experts say it is unlikely, though,that sharing an elevator briefly with an infected person would be enough to passthe virus.
（ ）
[A]detected
[B]caught
[C]disclosed
[D]revealed
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