[解析]
(1)A:细节题:从第一段的句子:When I first told people I was going to work in Cameroon,the most common reaction was:"Why?"The second was:"It's in Africa;you'll die!"The third:"Where is that?"可知作者刚刚说了自己的决定,很多人不理解他,选A.
(2)B:细节题:从第三段的句子:A small amount of research showed that in more than 40 years since gaining independence,Cameroon has been a peaceful country with no wars.可知喀麦隆在解放后是个自由的国家,选B.
(3)C:推理题:从第四段的句子:Now,after three years,I can say that these have been the healthiest years of my life!No malaria or any of the other frightening diseases you read about when Africa is mentioned.可知喀麦隆不像很多人想的那样糟糕,选C.
(4)A:猜词题:从后面的句子:spoken by about 80% of the population.可知由人口的80%说的法语应该是主要的语言,dominant=leading,选A.