【正确答案】 A

【答案解析】[听力原文]
Some governments, such as New Zealand, are facing up to the challenge with tough customs controls on foreign plants and animals. South Africa has well-funded removal programmes aimed at, for example, conserving the unique Cape Floral Kingdom and its economically important nature-based tourist attractions. But far too many countries have failed to grasp the scale of the threat, or are far too casual in their response. The "red tides" seen, for example, in Europe"s North Sea and linked with fish kills are blooms of algae brought accidentally in ballast water from the seas off China. Alien invasive species also challenge the UN"s poverty-related Millennium Development Goals. The plant has now invaded more than 50 countries around the world and annual costs to the Ugandan economy alone may be $112 million. The challenge is both a developed and developing economy one, but the true scale is perhaps only now unfolding. Scientists with the Delivering Alien Species Inventories for Europe say there are now 11,000 invaders in Europe, 15% of which cause economic damage. Meanwhile, climate change is also likely to favor some alien species currently constrained by local temperatures. Improved international cooperation is needed alongside support for initiatives, such as GISP, and the work of organizations like the International Union for the Conservation of Nature. It is important too to boost the capacity of the responsible national customs, organizations that monitor and control the entry of alien species and scientific institutes able to provide early warning, especially in developing countries alongside strengthening agreements under the UN"s International Maritime Organization.

What can be learnt about alien invasive species?

[解析] 本短文前两道题选项中的impose threat，enrich local species，kill local species和climate changes表明，短文可能与某事物带来的变化有关，可能涉及某个地区的物种。
选项中的impose threat，enrich local species，become和kill表明，本题可能考查某事物给当地带来的变化或影响。
综合推断题。短文中提到，外来入侵物种给联合国的千年发展目标带来了挑战，这种外来植物如今入侵了世界上的50多个国家，每年单单是给乌干达造成的经济损失就可能达到1.12亿美元。由此可知，外来入侵物种会给当地的经济带来威胁，故答案为A。

【正确答案】 B

【答案解析】[听力原文]
What is mentioned as the favorable factor for the growth of some alien species?

[解析] 选项均为名词性短语，结合短文主题推测，本题可能考查引起某种变化的因素。
细节理解题。短文中明确提到，气候变化也有可能对那些目前受限于所在地气温的外来物种有利，故答案为B。

【正确答案】 C

【答案解析】[听力原文]
Which of the following is important to boost according to the speaker?

[解析] 选项均以the capacity of开头表明，本题可能考查某类人群或机构的能力。
细节理解题。短文结尾处提到，提高国家主管海关、外来物种入侵监督和控制部门以及提供早期预警的科研机构的能力也十分重要，C为其中之一，故为答案。