Question

Jeremy Kerr, a researcher at the University of Ottawa in Canada, and his colleagues analyzed more than 400,000 observations of bumblebee species collected in North America and Europe from 1975 to 2010. When the researchers recorded the locations of these bee populations, they found that many of the 67 species analyzed were moving northward from their southern limits while the northern edges of the bees’ ranges are staying in place. What it results in is obvious.

Bees have been paid more attention to in recent years, with populations of honeybees and bumblebees obviously declining in some parts of Europe. Previously, attention on the decline of bee populations has focused on causes including habitat loss, pesticide use and the spread of bee parasites(寄生虫). But the work by Kerr’s team found something different.

"For every species, there is one or two species declining and others that are not moving at all," says Kerr. This shift has also been observed in other species, such as butterflies. But due to a new cause — the rise of temperatures instead of total pesticide use, a change in land use or parasites, bumblebees — unlike butterflies — have failed to extend the northern boundaries of their ranges into the territory that is now habitable for them, so bumblebee species across Europe and North America are declining rapidly, the latest study led by Kerr’s team finds. "Our data suggest that the new factor plays a leading, or perhaps the leading, role in this trend," says Kerr.

"This study shows that a fourth factor is also beginning to affect it. It is likely that the combined stresses from all of these pressures will have destructive impacts on bumblebees in the not-too-distant future," says Dave Goulson, a bee researcher at the University of Sussex, Brighton, UK.

Exactly what can be done to help bumblebees is not clear. Kerr’s team suggests that relocating colonies might be an answer but Goulson says that because the insects are mobile they are capable of moving northwards if there is suitable habitat available.

1.What does the move of the bees’ southern limits lead to?

A. The birth of new bee species.

B. The rise of the bees’ population.

C. The evolution of the bees.

D. The reduction of the bees’ habitat.

2.What’s the new cause of bee populations’ declining according to Kerr?

A. Habitat loss.

B. Pesticide use.

C. Climate change.

D. The spread of bee parasites.

3.Which statement may Goulson agree with?

A. Relocating bumblebees isn’t much good.

B. The findings of Kerr’s study are doubtful.

C. The future of bumblebees is still promising.

D. Knowing bumblebees’ living habits is the most urgent.

4.What kind of writing is this passage?

A. A book review.

B. An announcement.

C. A scientific report.

D. An official report.

Answer

1.D

2.C

3.A

4.C

【解析】

试题分析：文章讲述了欧洲和北美广泛存在的蜜蜂和大黄蜂的迁徙与繁衍。

1.1】D 细节理解题。根据第一段中they found that many of the 67 species analyzed were moving northward from their southern limits while the northern edges of the bees’ ranges are staying in place. What it results in is obvious.可知，被分析的67种蜜蜂从南界向北移动，而北部边界从没有变，这就意味着它们的栖息地变少了，故选D。

2.2】C 细节理解题。根据第三段But due to a new cause — the rise of temperatures instead of total pesticide use可知，蜜蜂种类下降的另一原因是温度的上升，即气候变化，故选C。

3.3】A 细节理解题。根据倒数第二段"This study shows that a fourth factor is also beginning to affect it. It is likely that the combined stresses from all of these pressures will have destructive impacts on bumblebees in the not-too-distant future," says Dave Goulson可知，Dave Goulson认为重置大黄蜂的栖息地不好，因为有很多因素影响大黄蜂栖息地的选择，故选A。

4.4】C 推理判断题。整篇文章讲述了蜜蜂的迁徙与繁衍，是一篇科普类文章，故选C。

【名师点睛】

推测文章的来源或者推测读者对象类题目要求考生本身要具备一定的常识，这样才能把文章的内容与自己已经具备的常识结合起来作出准确推断。比如考生要对报纸、杂志、网络、小说、童话、广告、说明书、旅游指南、药品说明、操作指南等有基本的了解，这样才能根据文章的特点对号入座，选出最佳答案。

推断文章出处类题目应从文章的内容或结构入手。从文章的内容上来看，主要有说明文(主要涉及广告和旅游指南等)、议论文(主要涉及影评、书评、新闻评论、正反对比议论文等)。从文章的结构上来看,新闻报道类文章一般在第一段概括全文内容，后面陈述细节，前面都会出现日期、地点或通讯社等名称。广告的格式特殊，语言简练。产品说明会出现产品名称或操作方式等。网站文章通常会出现click，online, web，website，video 等字眼，有时还会提供网址等。旅游指南类文章旨在介绍某一旅游景点的自然景观和人文特色，目的是吸引游客来访。

考点：科普类文章阅读