第1题
来源:北美
话题分类:Biology 属性:大范围重点预测
话题
【题目】飞蛾扑火的三个说法是否正确。moth飞蛾,总是围绕人造(human made lights)灯光的地方甚至crush into lights。
阅读要点
【阅读】文章给出三个possible explanations。
1. 飞蛾有飞向moon的本领。为了躲避青蛙等predator,它总是往上飞也就是moon的所在方向, 所以飞蛾可能误认为human made lights为moon。
2. 飞蛾飞向人造灯或许因为有heat。
3. 飞蛾也许误认为人造灯光是食物源food resource。
听力要点
【听力】 认为阅读文章不准确,不能成立。
1. 如果飞向人造灯是为了躲避predator,那么飞一会儿就得了,干嘛还要围绕几个小时甚至更长。当危险褪去本就可以飞走了。
2. 飞蛾有辨别食物散发出来的carbon dioxide的本领。人造灯没有释放二氧化碳。
3. 有些人造灯,例如fluorescent lights散发出来的heat少之又少,甚至少于natural light.
第2题
来源:北美
话题分类:Science&Technology 属性:大范围重点预测
话题
【题目】讨论防止飞船与太空垃圾发生碰撞的三种方法是否行得通。
阅读要点
【阅读】Three ways to avoid space debris from colliding with spaceships.
1. Tracking technology;
2. Spaceship shield;
3. Laser broom.
听力要点
【听力】The professor is against three methods:
1. Tracking technology will only track bigger debris. Small debris travel fast and collision caused them are fatal. E.g. a chip of paint from one spaceship collided with another spaceship. The small debris smashed on another spaceship’s wall and created a hole.
2. Shield method is not good too since it adds extra weight to the spaceship. We need to develop more powerful rocket to deliver the spaceship to the space. The challenge is harder for us.
3. Finally, the professor doesn’t like laser broom idea. A laser broom with such power could be used a military weapon in space, which violates the international agreement.
第3题
来源:北美
话题分类:Environment 属性:大范围重点预测
阅读要点
【阅读】应该减少。
1. 不是干净能源,会排放温室气体;
2. 产生污水;
3. 噪音和光影响社区。
听力要点
【听力】逐一进行反驳。
1. 确实不是干净能源,但是风能太阳能不能满足现在需要,而且天然气产生的温室气体是煤的一半;
2. 污水不被吸到地面也会渗透地底同样污染水源;
3. 开采管道都会off社区,还有公司会给钱,这些钱可以改善社区环境。
第4题
来源:北美
话题分类:Environment 属性:大范围重点预测
话题
【题目】使用分散剂(dispersant)对消除oil spill 对海洋造成的破坏作用到底有没有效?
阅读要点
【阅读】文章认为无效:
1. 不能彻底解决问题,因为只是使石油颗粒变小,burning才能彻底消除。
2. 分散剂对海洋里动物有害。
3. 产生有毒物质。
听力要点
【听力】教授认为有效:
1. 焚烧只在特定环境下才有效,当海洋风浪较大或流速过快时不能解决问题,分散剂把石油颗粒变小已经很不错了,因为这样就可以进一步借助海洋里的细菌,分解作用消除石油颗粒。
2. 之前都是实验室的样本,浓度大,现实中用的不会有危害。
3. (缺)
第5题
来源:大陆
话题分类:Biology 属性:大范围重点预测
话题
【题目】Whether the declining of bison was caused by the European American settlers.
阅读要点
【阅读】About bison, a kind of animal, something like cattle or horse. The passage suggests that the declining bison was due to the European American settlers:
1. When European American cross prairies, they hunted bison as food because there is no food in prairies.
2. They brought cattle and horses, which competed with bison for resources.
3. The evolving technology, especially guns, let hunters kill several bison in a short time.
听力要点
【听力】The professor contradicts each of these three points:
1. The European American moved from east to west, but the bison decline in the western part of America. The pattern of how bison disappeared gradually was different from that of movement of European American.
2. Bison have double furs covering their bodies and unique head structure, which allow them to live in harsher and colder areas. The areas were unreachable for cattle and horses. How could different spices compete with each other in separate territories?
3. The advanced technology should not be blame worthy for the decreasing bison. The ancient methods are as effectively as guts. Skilled ancient American hunters could kill several bison with short intervals.