本题目来源于试卷: HL Topic A2.3 Viruses，类别为 IB生物学
[问答题]
6. The graph shows the known number of Ebola infections worldwide from 1976 to 2015.
[img]data/attachment/exam/2501/24/2501241129276426.jpg[/img]
(c) Calculate the perce7 539el1cuqop*/-qrpt 9 ske kqkl8ayjte6o;n 8eyy )ym6r tlg2gsa:u3o)ea 9tage increase in the total number of cases from 2000 to 2009 in c e3ggs9y )y)8mlu :toyea6r a2omparison to 1990 to 1999.
参考答案: increase = 1194-472 = 722
% increase = 722/472 x 100 = 153% (accept 150 to 155%).
本题详细解析:
暂无
| 
