Task 1 Integrated writing

　　Why toucan evolved a bill

　　Reading:

　　1. used bill as a weapon against predators.

　　2. color and shape to hide from predators

　　3. get rid of excess body heat

　　Lecture:

　　1. Can't function as a weapon. It is made of hollow bones and filled with air, so it is thin and lightweight or else it can't fly. If it is used as a weapon, it will be easily damaged in activities like jabbing.

　　2. They have to call out to each other in order to use the color and shape to blend into surrounding areas. If they do this, they are trying to draw attention from predators.

　　3. Healthy toucan don't use their bills. They need bill to get rid of heat in the daytime but at night when the temperature is lower, they don't. They then need to retain body heat.

　　Task 2 Independent writing

　　It is as important for older people to study and learn new things as it is for younger people.

　　本篇独立写作难度相对较小，在写作、口语课上都经常练习。关键在遣词造句和论证方面，平常多下些功夫，做到熟悉的话题尽量分值高点儿。

　　可以从一下几个方面去展开论述：

　　1. 身心健康十分重要。老年人退休在家，子女又忙着上班，无人陪伴，相当冷清。通过学习，能够让老人的生活丰富多彩，有益身心健康。(说理)

　　2. 学习能让老年人感到自己仍是社会一员，并没有被遗弃。(举例)

　　3.活到老学到老。梦想依然可以通过老年的学习实现。

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