In some children who go blind, certain parts of the brain that normally control vision appear to switch jobs and focus instead on sound, a new study has found.
The study, by researchers at the University of Montreal, involved 7 adults who could see and 12 adults who had lost their vision when they were children. Each participant sat in a room with 16 loudspeakers at different locations. The room was designed so that there were no echoes. During the experiment, the speakers irregularly produced sounds. Participants had to point to where the sounds were coming from. Meanwhile, the researchers monitored blood flow in the brains of the participants to see which brain structures were working during the task.
The results showed that five of the blind participants were very good at pointing to where sounds were coming from. In these people, blood flow increased in the visual cortex- an area at the back of the right side of the brain. This part of the brain is usually associated with vision.
The other seven blind participants showed no increase in activity in the visual cortex. These people didn't do very well at picking out where sounds were coming from. Now, the researchers are looking at whether these people have gained an enhanced sense of touch instead of sound to replace their lost vision.
The scientists say that their study shows how adaptable parts of the brain can be.
(1)
The purpose of the experiment described in the passage is to find whether
[ ]
A．
blind children can regain their sight
B．
blind people have a better sense of sound
C．
the sense of touch is better among blind people
D．
blood flow in the brains of blind people is slower
(2)
The participants of the experiment were asked ________.
[ ]
A．
to tell the difference between 16 sounds
B．
to take down the time each sound lasted
C．
to identify the direction the sound came from
D．
to detect the number of the loudspeakers.
(3)
During the experiment, blood flow in the brains of the participants was measured in order to ________.
[ ]
A．
learn about the way they react to echoes
B．
look for the way of enhancing hearing ability
C．
find which parts of the brain were functioning
D．
expose the relationship between seeing and touching
(4)
Which of the following statements best summarizes the main idea of the passage?
[ ]
A．
Most blind people have a well - developed sense of touch.
B．
People go blind because of the breakdown of their visual cortex.
C．
Most blind people have a better sense of sound than normal people.
D．
Human brains can adjust themselves after the loss of a certain function.
Student Date of Birth：19/08/1988 Department of Education and Training
International Students Centre
Hong Xue 827-839 George Street PO Box 707
60 Waratah Street Broadway NSW 21007
Croydon Park NSW 2133 Phone：(612)9217 4801 1300 302 456
Fax：(612)9212 6721
http：//www.tafensw.edu.au/international/
WARNING LETTER
Dear Hong Xue,
As you are aware, your student visa regulations set out a number of conditions applying to your visa．It has come to our attention that you are failing to meet the following conditions：You must maintain accommodation, support and general welfare arrangements that have been approved by your education provider if you：
●have not turned 18; and
●are not staying in Australia with：
－a parent
－a custodian(监护人); or
－a relative who has been nominated(指定)by your parent or a custodian, is aged at least 21 and is of good character．
Note：You must not change those arrangements without the written approval of your education provider．
You must obey the following rules：
1．During term time you must：
a)remain in your homestay during the school term;
b)come home every night; and
c)inform your guardian at all times of your whereabouts．
2．On weekends you must：
a)have your guardian's permission to stay with friends; and
b)inform your guardian of the name, address and phone numbers of people you are visiting．
3．You must return your guardian's telephone calls．
This will be your only warning．If you continue to breach(违反)your student visa regulations we will report you to the Department of Immigration and Multicultural and Indigenous Affairs．Such action may lead to the cancellation(取消)of your student visa．Please contact me on(612)9217 4801 or fax(612)9212 6721 if you have questions about your enrolment．
Yours sincerely
Tracey Carlon
Student Advisor
International Students Centre
NSW Department of Education and Training
(1)
What's the purpose of writing this letter?
[ ]
A．
To remind the recipient of the conditions for applying for a student visa．
B．
To warn the recipient not to do anything against his student visa regulations again．
C．
To tell the recipient how to contact his student advisor．
D．
To inform the recipient of the student visa regulations．
(2)
What can be learned about the recipient from this letter?
[ ]
A．
He is under 18 and studies in Australia with his parents．
B．
He is required to come home every night according to the rules．
C．
He can stay with his friends on weekends if permitted．
D．
His student Visa has been cancelled．
(3)
To which address should the recipient reply if he feels like answering the letter?
[ ]
A．
Hong Xue at 60 Waratah Street, Croydon Park NSW 2133．
B．
Tracey Carlon at the Department of Immigration and Multicultural and Indigenous Affairs．
C．
Hong Xue at NSW Department of Education and Training．
D．
Tracey Carlon at 827-839 George Street, PO Box 707, Broadway NSW 21007．
阅读理解
Once upon a time the colors of the world started to quarrel．Green said,“Clearly I am the most important．I am the sign of life and hope．I was chosen for grass, trees and leaves．Without me, all animals would 1 ．”
Blue interrupted,“You only think about the 2 , but consider the sky and the sea． 3 the water that is the basis of life and drawn up by the clouds from the deep sea．Without my peace, you would all be 4 ．”
Yellow chuckled(笑道),“You are all so serious．I bring laughter, fun, and 5 into the world．”
Orange started next to blow her trumpet,“I am the color of health and strength．I may be 6 , but I am precious for I serve the needs of human life．When I fill the sky 7 , my beauty is so striking that no one gives another 8 to any of you．”
Red could stand it 9 and he shouted out,“I am the ruler of all of you．I am the color of danger and of bravery．I am willing to 10 truth．I am also the color of passion and of love．”
Then came Purple and Indigo(深蓝)…．
The colors went on boasting, each convinced of his or her own 11 ．Their quarreling became louder and louder．Suddenly there was a startling flash of bright lightening thunder．Rain started to pour down 12 ．The colors crouched(蜷缩)down 13 , drawing close to one another for comfort．
In the midst of the clamor(叫嚷), rain began to speak,“You foolish colors, fighting 14 yourselves, each trying to dominate 15 ．Don't you know that you were each made for a special purpose, 16 ?Join hands with 17 and come to me．”
Doing as they were told, the colors 18 and joined hands．They formed a colorful rainbow．From then on, whenever a good rain 19 the world, a rainbow appears in the sky．They remember to 20 one another．
