Cambridge IELTS 07, Practice Reading Module with Answers explanation

 

IELTS Cambridge 07

Reading Passage 1

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Let’s Go Bats

A         Bats have a problem: how to find their way around in the dark. They hunt at night, and cannot use light to help them find prey and avoid obstacles. You might say that this is a problem of their own making one that they could avoid simply by changing their habits and hunting by day. But the daytime economy is already heavily exploited by other creatures such as birds.  (Q3) Given that there is living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favoured bats that make a go of the night-hunting trade. (Q2) It is probable that the nocturnal trades go way back in the ancestry of all mammals. In the time when the dinosaurs dominated the daytime economy, our mammalian ancestors probably only managed to survive at all because they found ways of scrapping a living at night. Only after the mysterious mass extinction of the dinosaurs about 65 million years ago were our ancestors able to emerge into the daylight in any substantial numbers.    

B         Bats have an engineering problem: (Q1) how to find their way and find their prey in the absence of light. Bats are not only creatures to face this difficulty today. Obviously the night-flying insects that they prey on must find their way about somehow. Deep-sea fish and whales have little or no light by day or by night. Fish and Dolphins that live in extremely muddy water cannot see because, although there is light, it is obstructed and scattered by the dirt in the water. Plenty of other modern animals make their living in conditions where seeing is difficult or impossible.

C         Given the questions of how to manoeuvre in the dark, what solutions might an engineer consider? The first one that might occur to him is to manufacture light, to use a lantern or a searchlight. Fireflies and some fish (usually with the help of bacteria) have the power to manufacture their own light, but the process seems to consume a large amount of energy. Fireflies use their light for attracting mates. This doesn’t require a prohibitive amount of energy. a male’s tiny pinprick of light can be seen by a female from some distance on a dark night, since her eyes exposed directly to the light source itself. However, using light to find one’s own way around requires vastly more energy, since the eyes have to detect the tiny fraction of the light that bounces off each part of the scene. The light source must therefore be immensely brighter if it is to be used as a headlight to illuminate the path, than if it is to be used as a signal to others. In any event, whether or not the reason is the energy expense, it seems to be the case that, with the possible exception of some weird deep-sea fish, no animal apart from man uses manufactured light to find its way about.

D         What else might the engineer think of? Well blind humans sometimes seem to have an uncanny sense of obstacles in their path. It has been given the name “facial vision” because blind people have reported that it feels a bit like the sense of touch, on the face. One report tells of a totally blind boy who could ride his tricycle at good speed round the block near his home, using facial vision. Experiments showed that, in fact, facial vision is nothing to do with touch or the front of the face, although the sensation     may be referred to the front of the face, like the referred (Q6) pain in a phantom limb. The sensation of facial vision, it turns out, really goes in through the ears. Blind people, without even being aware of the fact, are actually using (Q7) echoes of their own footsteps and of other sounds, to sense the presence of obstacles. Before this was discovered, (Q5) engineers had already built instruments to exploit the principle, for example to measure the (Q 8) depth of the sea under a ship. After this technique had been invented, it was only a matter of time before weapons designers adapted it for the (Q 9) detection of submarines. Both sides in the Second World War relied heavily on these devices, under such codenames as Asdic ( British ) and Sonar ( American ) , as well as Radar ( American ) , RDF ( British ) , Which uses radio echoes rather than sound echoes.

E          (Q10) The Sonar and Radar pioneers didn’t know it then, but all the world now knows that bats, or rather natural selection working on bats, had preferred the system tens of millions of years earlier and their “Radar” achieves feats of detection and navigation that would strike an engineer dumb with admiration. (Q11) It is technically incorrect to talk about bat “Radar”, since they do not use radio wave. (Q4) (Q12) It is sonar. But the underlying mathematical theories of radar and sonar are very similar, and much of our scientific understanding of the details of what bats are doing has come from applying radar theory to them. (Q13) The American zoologist Donald Griffin, who was largely responsible for the discovery of sonar in bats, coined the term “echolocation” to cover both sonar and radar; whether used by animals or by human instruments.

 

Questions 1-5

Reading passage 1 has five paragraphs A-E

Which paragraph contains the following information?

Write the correct letter. A-E, in boxes 1-5 on your answer sheet.

NB. You may use any letter more than once.

1 examples of wildlife other than bats which do not rely on vision to navigate by Answer: B

2 how early mammals avoided dying out Answer: A

3 why bats hunt in the dark Answer: A

4 how a particular discovery has helped our understanding of bats Answer: E

5 early military uses of echolocation. Answer: D

 Questions 6-9

Complete the summary below.

Choose ONE WORD ONLY from the passage for each answer.

Write your answers in boxes 6-9 on your answer sheet.

                                                              Facial Vision

Blind people report that so-called “facial vision” is comparable to the sensation of touch on the face. In face, the sensation is more similar to the way in which pain from a 6 Phantom arm or leg might be felt. The ability actually comes from perceiving 7 echoes  through the ears. However, even before this was understood, the principle had been applied in the design of instruments which calculated the 8 depth of the seabed. This was followed by a wartime application in devices for finding 9  submarines

Questions 10-13

Complete the sentences below.

Choose NO MORE THAN TWO WORDS From the passage for each answer.

Write your answer in boxes 10-13 on your answer sheet.

10 Long before the invention of radar, natural selection had resulted in a sophisticated radar-like system in bats.

11 Radar is an inaccurate term when referring to bats because radio waves are not used in their navigation system.

12 Radar and sonar are based on similar  mathematical theories.

13 The word “echolocation” was first used by someone working as a Zoologist.

                                                Reading Passage 2

You should spend about 20 minutes on Question 14026, which are based on Reading Passage 2 on the flowing pages.

Questions 14-20

Reading Passage 2 has seven paragraphs, A-H

Choose the correct heading for paragraphs A and C-H from the list of headings below.

Write the correct number, i-xi, in boxes 14-20 on your answer sheet.

List of Headings

I               Scientists call for revision of policy

ii              An explanation for reduced water use

iii             How a global challenge was met

iv             Irrigation systems  fall into disuse

v              Environmental effects

vi             The financial cost of recent technological improvements

vii            The relevance of health

viii           Addressing the concern over increasing populations

ix             A surprising downward trend in demand for water

x              The need to rise standards

xi             A description of ancient water supplies

 

 

 
 

 

 

 

 

 

 

 

 

 

 

 

 14 Paragraph A Answer: xi    

Example                                                                               Answer

Paragraph B                                                                        iii

 
 

 


                                                                                   

15       Paragraph C , Answer : vii   

16      Paragraph D Answer :v   

17      Paragraph E Answer : i    

18      Paragraph F Answer : ix    

19      Paragraph G Answer : ii    

20      Paragraph H Answer : x    

                                                              MAKING EVERY DROP COUNT

 A   (Q 14-XI) The history of human civilization is entwined with the history of the ways we have learned to manipulate water resources. As towns gradually expanded, water was brought from increasingly remote sources, leading to sophisticated engineering efforts such as dams and aqueducts. At the height of the Roman Empire, nine major systems, with an innovative layout of pipes and well-bull sewers, supplied the occupants of Rome with as much water per person as is provided in many parts of the industrial world today.

B  During the industrial revolution and population explosion of the 19th and 20th centuries, the demand for water rose dramatically. Unprecedented construction of tens of thousands of monumental engineering projects designed to control floods, protect clean water supplies, and provide water for irrigation and hydropower brought great benefits to hundreds of millions of people. Food production has kept pace with soaring populations mainly because of the expansion of artificial irrigation systems that make possible the growth of 40 % of the world’s food. Nearly one fifth of all the electricity generated worldwide is produced by turbines spun by the power of falling water.

C (Q15-VII) Yet there is a dark side to this picture: despite our progress, half of the world’s population still suffers, with water services inferior to those available to the ancient Greeks and Romans. As the United Nations report on access to water reiterated in November 2001, more than one billion people lack access to clean drinking water; some two and a half billion do not have adequate sanitation services. Preventable water-related diseases kill an estimated 10,000 to 20,000 children every day, and the latest evidence suggests that we are falling behind in efforts to solve these problems.

D (Q16: V)  The consequences of our water policies extend beyond jeopardizing human health. Tens of millions of people have been forced to move from their homes - often with little warning or compensation - to make way for the reservoirs behind dams. More than 20% of all freshwater fish species are now threatened or endangered because dams and water withdrawals have destroyed the free-flowing river ecosystems where they thrive.  Certain irrigation practices degrade soil quality and reduce agricultural productivity. Groundwater aquifers are being pumped down faster than they are naturally replenished in parts of India, China, the USA and elsewhere. And disputes over shared water resources have led to violence and continue to raise local, national and even international tensions.

E  (Q17:I) At the outset of the new millennium, however, the way resource planners think about water is beginning to change. The focus is slowly shifting back to the provision of basic human and environmental needs as top priority - ensuring “some for all,” instead of “more for some”. Some water experts are now demanding that existing infrastructure be used in smarted ways rather than building new facilities, which is increasingly considered the option of last, nor first, resort. This shift in philosophy has not been universally accepted, and it comes with strong opposition from some established water organizations. Nevertheless, it may be the only way to address successfully the pressing problems of providing everyone with clean water to drink, adequate water to grow food and a life free from preventable water-related illness.

F (Q18: IX) Fortunately - and unexpectedly - the demand for water is not rising as rapidly as some predicted. As a result, the pressure to build new water infrastructures has diminished over the past two decades. Although population, industrial output and economic productivity have continued to soar in developed nations, the rate at which people withdraw water from aquifers, rivers and lakes has showed . , And in a few parts of the world, demand has actually fallen.

G (Q19: II)  What explains this remarkable turn of events? Two factors: people have figured out how to use water more efficiently, and communities are rethinking their priorities for water use. Throughout the first three-quarters of the 20th Century, the quantity of freshwater consumed per person doubled on average; in the USA, water withdrawals increased tenfold while the population quadrupled. But since 1980, the amount of water consumed per person has actually decreased, thanks to a range of new technologies that help to conserve water in homes and industry. In 1965, for instance, Japan used approximately 13 million gallons of water to produce $1 million of commercial output; by 1989 this had dropped to 3.5 million gallons (even accounting for inflation) - almost a quadrupling of water productivity. In the USA, water withdrawals have fallen by more than 20% from their peak in 1980.

H (Q20: X) On the other hand, dams, aqueducts and other kinds of infrastructure will still have to be built, particularly in developing countries where basic human needs have not been met. But such projects must be built to higher specifications and with more accountability to local people and their environment than in the past. And even in regions where new projects seem warranted, we must find ways to meet demands with fewer resources, respecting ecological criteria and to a smaller budget.

 Questions 21-26

Do the following statements agree with the information given in Reading Passage 2?

In boxes 21-26 on your answer sheet, write

YES if the statement agrees with the claims of the writer

NO   if the statement contradicts the claims of the writer

NOT GIVEN if it is impossible to say what the writer thinks about this

21 Water use per person is higher in the industrial world than it was in Ancient Rome. NO

22 Feeding increasing populations is possible due primarily to improved irrigation systems. YES

23 Modern water systems imitate those of the ancient Greeks and Romans. NOT GIVEN

24 Industrial growth is increasing the overall demand for water. NO

25 Modern technologies have led to a reduction in domestic water consumption. YES

26. In the future, governments should maintain ownership of water infrastructures. NOT GIVEN.

 

NITOR BD BSC in Physiotherapy 1st year Admission Circular 2020-21

NITOR BSC in Physiotherapy 1st year Admission CIRCULAR 2020-21 

National Institute of Traumatology and Orthopaedic Rehabilitation (NITOR), under medicine   faculty of University of Dhaka  , BSc in Physiotherapy 1st year Admission Circular 2020-21 has been published. A total five years course including 4 years Academic and 1 year mandatory internship . 

Admission Requirements :

Science Background , Total GPA 8 in SSC and HSC including Physics, Chemistry and Biology and individually grade point would be 3.5 in each examination. Those who have passed SSC before 2017 and HSC before 2019 are not eligible for apply.

How to Apply :

 Apply through http://nitorbd.bigmsoft.com 

Deposit Taka 1000 in favor of " PHYSIOTHERAPY ADMISSION TEST " , Current Account "020001067297, Agrani Bank , Shymoli Branch" at any Agrani Branch in Bangladesh . Collect the deposit slip and preserve it for future use.

Applicant's photo, signature ( Max. 300kb, jpg) and Bank deposit slip (max. 400 kb, jpg ) scan copy will be needed for online application. Detail online application procedures are available in the website.

Important Dates: 

Online Application Stats: 17/04/2021 

Online Application Ends: 17/05/2021 ( 12 PM) 

Admit Card Collection: 29/05/2021  to 03/06/2021 ( 12 PM)

Admission Test : 04/06/2021 ( Friday), 10 AM , Time : 01 hour

Place: Bangabandhu Sheiikh Mujib Academy 

How to Collect Admit Card: 

Admit Card can be collected from http://nitorbd.bigmsoft.com website from 29/05/2021 to 03/06/2021 . Download the admit card and keep the color printed copy at the time of admission test .

Admission Test Procedures :

Physics -30 Marks

Chemistry - 30 Marks

Biology -30 Marks

English and General Knowledge - 10 Marks

Total : 100 Marks, The questions of will be in MCQ format. 

one marks for every right answer and 0.25 deduction for every wrong answers.

Applicants SSC GPA multiplied by 8 and HSC GPA multiplied by  12 and MCQ result will be accumulated for preparing merit list.

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BUET Undergraduate admission 20-21 circular

BUET Undergraduate admission circular 2020-21
 Bangladesh university of Engineering & Technology ( BUET) undergraduate admission circular for the session 2020-21 has been published on 10th April 2021. Admission requirements:

1) SSC 4.50 out of 5.0

    HSC 5.0 out of 5.0

    Physics , Chemistry, Math 270 marks out of 300 marks

 Those who passed SSC in 2017 and HSC in 2019 but HSC      evaluated result published after 10 September 2019 : 

Physics , Chemistry and math 480 marks out of 600 marks

Important Dates :

Online application starts : 15 April 2021, 10 AM

Online application End : 24 April 2021, 3.00 PM

Preliminary exam selected candidates list published: 05 May, 2021

Preliminary exam date : 31 May, 2021 and 01 June , 2021

Final result for admission : 05 June , 2021

Admission date : 10 June , 2021 

1st Waiting list : 01 July, 2021