A. infected body fluidsB. against the outbreak se
已帮助 人
A. infected body fluids
B. against the outbreak severity
C. the mode of transmission
D. the initial days of being infected
E. three countries in West Africa
F. within a wide range of days
-
答案:F
由第四段第二句“Symptoms may appear as early as two days or as late as three weeks after initial infection”可知,感染埃博拉的症状可能最早在感染后两天或晚至三周才会显现,说明潜伏的天数不等,故本题应选F。
