[解析]
(1)C.细节推理题,根据第一段的Whether its final consequences will cause serious damage or nothing more than a small trouble still remains to be seen.它最终的结果是否会引起严重的损伤或只不过是一个小问题还有待发现.故本题答案为C选项.
(2)A.细节推理题,根据第二段的The story began in 1956 when an American scientist working in Brazil decided to solve the problem of increasing the productivity of that country's bees.故事开始于1956年,一位在巴西工作的美国科学家决定解决增加该国蜜蜂产量的问题.可知本题答案为A选项.
(3)C.细节推理题,根据第三段的For some reason as yet unseen,but perhaps as a result of something in their environment,the new bees began to develop extremely attacking personalities.由于某种目前还未知的原因(但可能是环境的结果),新的蜜蜂开始形成极强的攻击个性.可知本题答案为C选项.
(4)B.细节推理题,根据最后一段的The countries that lie in their path are naturally worried because it looks as if nothing can be done to stop them.位于它们(蜜蜂)路上的国家自然而然会担忧因为看起来似乎没什么可以阻止它们(通过他们的国家).可知本题答案为B选项"蜜蜂会在更多的国家带来问题".