雅思口语话题难度是不又增加了

　　将口语题库拿到手之后，有多少人对着一波口语新题无从下手??现在的新题相较于之前，一个最明显的趋势就是题目限制越来越多、话题越来越具体，导致大家能够回答的范围也开始缩小了。

　　举个例子

　　以前雅思口语话题可能是这样提问的：Describe a friend or a person who encouraged you.(描述一个曾经鼓励过你的人)

　　而现在则会更加具体：Describe a time when someone said something positive about your work.(描述一次别人对你工作提出夸奖的时候)

　　不止是要说出鼓励你的具体场景，还得是对你的工作而不是其它事情提出鼓励。

　　类似这种限制在本季口语新题出现较多，还有不少离大家生活较远、或是较为抽象的话题，对于不少考鸭而言都是有一定难度的。

　　biodiversity

　　释义：the variety of plants and animals in a particular place 生物多样性

　　例句：

　　By staying within the safe environmental limits, much of the biodiversity would be conserved.

　　deforestation

　　释义：the cutting down of trees in a large area, or the destruction of forests by people 砍伐森林

　　例句：

　　Deforestation is destroying large areas of tropical rain forest.

　　ecosystem

　　释义：all the living things in an area and the way they affect each other and the environment 生态系统

　　例句：

　　Pollution can have disastrous effects on the delicately balanced ecosystem.

　　emission

　　释义：the act of sending out gas, heat, light, etc. 排放

　　例句：

　　We should take action to cut vehicle emissions.

　　devastating

　　释义：causing a lot of damage or destruction 毁灭性的

　　例句：

　　Pesticides have had a devastating effect on the environment.

　　contaminate

　　释义：to make something less pure or make it poisonous 污染

　　例句：

　　Much of the coast has been contaminated by nuclear waste.

　　extinction

　　释义：a situation in which something no longer exists 灭绝

　　例句：

　　Many species of plants and animals are in danger of extinction.

　　habitat

　　释义：the place where a plant or animal lives 栖息地

　　例句：

　　With so many areas of woodland being cut down, a lot of wildlife is losing its natural habitat.