Tài liệu Sparpening skills for the toefl ibt part 9 pptx

You will then have twenty minutes to write a response to a question related to the relationship between the lecture and the reading passage.. The ability of tree frogs to climb hazardous

Question 6

Track 53 Now listen to part of a talk in an economics class

Track 54 Using points and examples from the talk, explain what prices are and how they have

evolved

Preparation time

119

Writing Section

Directions

This section measures your ability to use writing to communicate in an academic environment

There are two tasks in this section For the first task, you will read a passage and listen to a

lecture You will then write a response to a question based on what you read and hear For

the second task, you will write a response to a question based on your own knowledge and

experience

Now, read the directions for the first writing task

Integrated Writing Directions

For this task, you will have three minutes to read a passage about an academic topic You may

take notes while reading if you wish The passage will then disappear and you will hear a lecture

about the same topic While listening, you may also take notes

You will then have twenty minutes to write a response to a question related to the relationship

between the lecture and the reading passage Answer the question as completely as possible using

information from both the reading passage and the lecture The question will not ask you to

express a personal opinion The reading passage will appear again when it is time for you to

start writing You may use your notes from the lecture and the reading to help you answer the

question

Typically, an effective response for this task will be 150 to 225 words long Your response will

be graded on the quality of your writing and on the completeness and accuracy of the

information you include in your response If you finish your response before your time has run

Now, you will see the reading passage for three minutes Remember that the passage will be

available to you again while you are writing Immediately after the reading time ends, the lecture

will begin Be sure to keep your headset on until the lecture has ended

PDIg 0/2113

121

The ability of tree frogs to climb hazardously slippery slopes and

to cling upside down has long fascinated scientists Tree frogs inhabit

trees, as their name implies, and most species have adhesive pads

on their toes The toe pads of the White's tree frog secrete-mucus

Scientists believe itis this fluid that acts as an adhesive to-help

the frog climb trees and cling to the underside of branches The

toe pads are made up of hexagonal—six-sided—cells, separated

by small channels through which the mucus drains Furthermore,

each hexagonal cell is divided into microscopic pegs, and it is

believed that the pad design works with the mucus to keep the

pads permanently wet, enabling the frog to grip Evidence points

to viscosity and surface tension as the keys to how the mucus

helps the tree frog stick to surfaces

Viscosity is a property of liquids that determines the speed at

which the liquid will flow over a solid surface or other layers of

fluid In general, the higher the viscosity, the more slowly the

fluid flows over a surface The apparently high viscosity of the

mucus of the White's tree frog ensures that the pad is continually

covered with the adhesive liquid For its part, the surface tension

of the mucous determines the force with which the toe pads

cling to surfaces Again, the more surface tension, the greater

the force, the better the ability to cling Scientists believe that

the properties of the mucus combine with the toe pad design to

give the White's tree frog its incredible capacity to climb and

grip

122

“Writing

Track 56 Question: Summarize the points made in the lecture, explaining how they cast

doubt on points made in the reading passage

Niieeizshce OAc ÔÔÔÔÒÓÔ

The ability of tree frogs to climb hazardously slippery slopes and

to cling upside down has long fascinated scientists Tree frogs inhabit

trees, as their name implies, and most species have adhesive pads

on their toes The toe pads of the White's tree frog secrete mucus

Scientists believe it is this fluid that acts as an adhesive to help

the frog climb trees and cling to the underside of branches The

toe pads are made up of hexagonal—six-sided—cells, separated

by small channels through which the mucus drains Furthermore,

each hexagonal cell is divided into microscopic pegs, and it is

believed that the pad design works with the mucus to keep the

pads permanently wet, enabling the frog to grip Evidence points

to viscosity and surface tension as the keys to how the mucus

helps the tree frog stick to surfaces

Viscosity is a property of liquids that determines the speed at

which the liquid will flow over a solid surface or other layers of

fluid In general, the higher the viscosity, the more slowly the

fluid flows over a surface The apparently high viscosity of the

mucus of the White's tree frog ensures that the pad is continually

covered with the adhesive liquid For its part, the surface tension

of the mucous determines the force with which the toe pads

cling to surfaces Again, the more surface tension, the greater

the force, the better the ability to cling Scientists believe that

the properties of the mucus combine with the toe pad design to

give the White's tree frog its incredible capacity to climb and

grip

124

Independent Writing Directions

For this task, you will write a response to a question that asks you to present, explain, and

support your opinion on an issue You will have thirty minutes to write your response to the

question

Typically, an effective response for this task will contain a minimum of 300 words Your

response will be graded on the quality of your writing This includes the development of

your ideas, the organization of the content, and the quality and accuracy of the language

used to express ideas

When you are ready to continue, go to the next page

aT Nae

Question:

Do you agree or disagree with the following statement?

A minimum number of physical education credits

should be required for graduation from college

Use specific reasons and examples to support your answer