Task1：

Do you agree or disagree with the following statement?

Teenagers cause many problems for their parents.

Use specific examples and details to support your opinion.

Task2：

Limit Borrowing Period for Library Books

Currently,students are permitted to borrow library books and take them home for one month before they have to return them.I think the university library should limit the borrowing period to two weeks.First of all,I think most students will agree that they do not need a whole month to read a book-two weeks is enough time.Plus,students who are waiting for a book to be returned so they can use it won’t have to wait as long as they do now.This way they won’t fall behind with their assignments.

Sincerely.

Mark Jones

The woman expresses her opinion about the letter writer’s proposal.Briefly summarize the proposal.Then state the woman’s opinion and explain the reasons she gives for holding that opinion.

Task3：

Exaptation

The physical features of an animal’s body usually serve a specific purpose-they function to increase the animal’s chances of survival.But,over time,in response to a particular challenge in its environment,an animal species will sometimes use one of its existing features for a new purpose.This is known as exapfation.By finding another use for one of its physical features,exaptation allows animals to respond to additional challenges in their environment.The animal may continue to use the physical feature for its older purpose,while also using it for the new purpose.

Explain how the example of the heron illustrates exaptation.