该题问的是安哥拉因黄热病（ yellow fever）而造成的死亡人数是多少，问题 相对简单，因为第一句已经明确地给出了答案，即225人。从解题技巧上来说，该 题作为单项选择题，答题时在肯定这一选择无误的前提下就可以忽略其他选项。录音中其他内容都是背景和细节的介绍，与问题本身没有直接关联，所以选项B、C、 D 都是错误选项。

[重点难点]
理解deatii toll与 number of deaths同义。

[录音原文]
The number of deaths from a yellow fever outbreak in Angola has risen to 225 with another 1,600 infected. Experts fear the number could be greater in rural areas where reporting is difficult. A huge preventative vaccination campaign launched in February has already reached 6 million of the capital’s 7.4 million inhabitants， but the disease has since spread to 16 of the country's 18 provinces.