【听力】
话题：Two types of adaption to cold weather.
要点1：basking
例子1：Arctic butterfly expose to sunshine in daytime, spread its swings to absorb heat.
要点2：chemical substances
例子2：Arctic fly can secrete a kind of chemical can prevent from being freezing.
第3题来源：大陆话题分类：Plant属性：大范围重点预测
话题
Task 6 学术场景
解题思路
【听力】
话题：植物吸引虫子来自我保护。
要点1：释放化学物质emit certain chemical。
例子1：举例一种植物，受到攻击时释放chemical，可以attract别的虫子来消灭这种害虫。
要点2：friendly way产生虫子喜欢吃的东西，来keep the insect around。
例子2：举例一个植物释放ants喜欢的东西，这样周围全是ant。当植物遭受攻击时，ant就会在虫子攻击植物之前把他们吃掉。
第4题来源：大陆话题分类：Human Behavior属性：大范围重点预测
话题
Task 6 学术场景
解题思路
【听力】
话题：Immune system：身体免疫的2个保护stages。
要点1：Antibiotic stage
例子1：是防御的第一线，防止外物进入。例子是skin，可以prevent germs get into body。比如被蚊子咬了之类的。
要点2：Mechanical removal
例子2：异物的排出，防止在体内生长，把带有disease的germs get out of body，例子是sneeze。
第5题来源：大陆话题分类：Animal属性：大范围重点预测
话题
Task 6 学术场景
解题思路
【听力】
话题：Two adaptions for fixed ocean-bottom organism used to get food.
要点1：active approach
例子1：Like the sea anomy, a colorful sea animal with arm-like structure. The arm like thing is poisonous and will sting the fishes. So when the fish comes around the anomy, it’ll sting the fish and pull it over. So that they are actively trying to get the food.
要点2：passive approach
例子2：Like the oyster, stays in the shell and doesn’t move at all. It’s shell has little openings so that when the seawater that contains food material and nutrient flows through it, those materials will get into the shell from the opening. They will look still the same from the outsider but they are actually eating.
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