A New Headphone
The answer to a very great noise may not be blocking it out with earplugs but taking that noise and bearing it as its own game.
Earplugs have been the simple but effective way to stop noise affecting your mind, but their shortcoming is that they also block out sounds you may want or need to hear, such as music or someone talking to you.
The answer to this problem is “ active noise cancellation(抵消)” headphones that are made up of a microphone and electronics (电子装置)that take all background low-frequency (低频率) noise, turn the sound waves upside down and rebroadcast them into your ears.
The result is that all the unwanted noises around are blocked out.
In effect, one set of electronically produced around wave has sucked away the unwanted sound waves of noise.
Stand next to a busy road wearing the noise cancellation headphones and the traffic noise disappears. Sit in an airplane and the engine noise dies away. In a noisy office, the noise of office equipment, people and air-conditioning is gone. You can still , however, hear music or people talking because that sound does not have a regular pattern and so the device (装置) does not block it.
49.What is the best way to keep out the unwanted noise?
A.To wear an earplug. B.To wear a headphone.
C.To wear a microphone. D.To wear electronics.
50.Which of the following gives a general idea of how the above device works?
A.By producing low-frequency sound waves and rebroadcast them.
B.By producing new sound waves to suck away the unwanted sound waves.
C.By changing all background low-frequency noise into an irregular pattern.
D.By sucking away all the low-frequency sound waves turned upside down.
51.Suppose you are driving your friend to the airport and the car radio is on, what can't you hear if you wear a headphone?
A.The radio music and the car engine noise.
B.The noise of the planes passing overhead and what your friend says.
C.The radio music and what your friend says.
D.The nose of the car and the planes passing overhead.
科目:高中英语 来源:江苏省盐城中学2010-2011学年高一下学期期中考试英语试题 题型:016
As a new head teacher, I often think of ________ I can react more appropriately on such occasions.
what
which
that
how
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B
PENRICE
COMMUNITY COLLEGE
Cornwall County Counicl
We Need Two
ASSISANT HEADTEACHERS
From January 2006
L13—17(£44,703—£49,314)
Penrice Community College is a highly regarded and successful 11-16 specialist languages college. Following the recent appointment of a new headteacher we’re restructuring the leadership team to create two new roles.
One post will involve leading teaching teams with responsibility for developing curricula(课程) and time-tabling.
The other post will be leading student based teams and responsibility for student learing outcomes and the removal of barriers to student success such as poor attendance or disaffection.
Penrice Community College is:
·A school with 1,350 wonderful students
·High achieving with results well above average
·Mentioned twice in HMCl’s outstanding schools list
·A British Council International School
·Situated in a beautiful part of mid-Cornwall
All enquires for information and application packs should be made to Danielle Eyres on 01726—72613 or at secretary@penricornmvall .sch.uk
Closing date for applications is Tuesday October 4th at noon. Interviews will be held on Monday 17th and Tuesday 18th October 2005.
60. The underlined word “restructuring’ probably means ________.
A. formally telling sb to do B. Joining the two parts together
C. rebuilding sth and making it work again D. extending the size of sth
61. The purpose of the above passage is to ________
A. introduce the advantages of a school
B. report the appointment of a new head teacher
C. call on more students to go to school
D. advertise for new assistant headteachers
62. The two new posts are required to do all the following EXCEPT ________.
A. stop students missing classes B. get students interested in learning
C. lead students-based teams D. arrange new curricula
63. HMCI is probably the name of ________.
A. an educational organization B. a school leader
C. a political party D. a news reporter
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单词拼写(共10小题,每小题1分,满分10分)
【小题1】The passengers were ________(紧紧地) packed in the train.
【小题2】We also learned some new sentence ________ in her class.
【小题3】This illness can’t be ________ (治愈)easily.
【小题4】A medical team ________ (由……组成)of eleven doctors has been sent to the front.
【小题5】Zhang Haidi is ________ (乐观的)about her life.
【小题6】The court found her ______ (有罪的)of murder.
【小题7】White is the _________ (象征)of purity.
【小题8】They __(委派)a new head teacher at the school last week.
【小题9】New controls will come into ________ (生效)next month.
【小题10】I was ________ (失望)to see she wasn’t at the party.
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单词拼写(共10小题,每小题1分,满分10分)
1.The passengers were ________(紧紧地) packed in the train.
2.We also learned some new sentence ________ in her class.
3.This illness can’t be ________ (治愈)easily.
4.A medical team ________ (由……组成)of eleven doctors has been sent to the front.
5.Zhang Haidi is ________ (乐观的)about her life.
6.The court found her ______ (有罪的)of murder.
7.White is the _________ (象征)of purity.
8.They __(委派)a new head teacher at the school last week.
9.New controls will come into ________ (生效)next month.
10.I was ________ (失望)to see she wasn’t at the party.
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科目:高中英语 来源: 题型:阅读理解
PENRICE
COMMUNITY COLLEGE
Cornwall County Counicl
We Need Two
ASSISANT HEADTEACHERS
From January 2006
L13—17(??44,703—??49,314)
Penrice Community College is a highly regarded and successful 11-16 specialist languages college. Following the recent appointment of a new headteacher we’re restructuring the leadership team to create two new roles.
One post will involve leading teaching teams with responsibility for developing curricula(课程) and time-tabling.
The other post will be leading student based teams and responsibility for student learing outcomes and the removal of barriers to student success such as poor attendance or disaffection.
Penrice Community College is:
·A school with 1,350 wonderful students
·High achieving with results well above average
·Mentioned twice in HMCl’s outstanding schools list
·A British Council International School
·Situated in a beautiful part of mid-Cornwall
All enquires for information and application packs should be made to Danielle Eyres on 01726—72613 or at secretary@penricornmvall .sch.uk
Closing date for applications is Tuesday October 4th at noon. Interviews will be held on Monday 17th and Tuesday 18th October 2005.
45.The underlined word “restructuring’ probably means ________.
A.formally telling sb to do B.Joining the two parts together
C.rebuilding sth and making it work again D.extending the size of sth
46.The purpose of the above passage is to ________
A.introduce the advantages of a school
B.report the appointment of a new head teacher
C.call on more students to go to school
D.advertise for new assistant headteachers
47.The two new posts are required to do all the following EXCEPT ________.
A.stop students missing classes B.get students interested in learning
C.lead students-based teams D.arrange new curricula
48.HMCI is probably the name of ________.
A.an educational organization B.a school leader
C.a political party D.a news reporter
查看答案和解析>>
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