A-A+
According to a WHO official Dr. Mardel the g
问题详情
According to a WHO official, Dr. Mardel, the guidelines were flexible because______.
A．SARS would reemerge in poor countries
B．no one knew where, when and in what setting SARS would return
C．SARS would not appear in developed countries
D．no one knew whether SARS would return or not
参考答案
正确答案：B
解析：事实细节题。最后一段中的“Dr. Mardel said they were flexible because no one knew where，when and in what setting SARS would return"是解题的依据。B) 与此句完全相同。
