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Read the following passage and blacken the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks in the following question. 

Why is it that many teenagers have the energy to play computer games until late at night but can't find the energy to get out of bed in time for school? According to a new report, today's generation of children are in danger of getting so (20) _______ sleep that they are putting their mental and physical health at risk. Adults can easily survive on seven to eight hours' sleep a night, (21) _____teenagers require nine or ten hours. According to medical experts, one in five youngsters gets anything between two and five hours' sleep a night less than their parents did at their age. 

This (22) ______ serious questions about whether lack of sleep is affecting children's ability to concentrate at school. The connection between sleep deprivation and lapses in memory, impaired reaction time and poor concentration is well (23) _________. Research has shown that losing as little as half an hour's sleep a night can have profound effects on how children perform the next day. A good night's sleep is also crucial for teenagers because it is while they are asleep (24) they release a hormone that is essential for their 'growth spurt' (the period during teenage years when the body grows at a rapid rate. It's true that they can, to some extent, catch up on sleep at weekends, but that won't help them when they are dropping off to sleep in class on a Friday afternoon. 

Read the following passage and blacken the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions. 

   Advertising helps people recognize a particular brand, persuades them to try it, and tries to keep them loyal to it. Brand loyalty is perhaps the most important goal of consumer advertising. Whether they produce cars, canned foods or cosmetics, manufacturers want their customers to make repeated purchases. The quality of the product will encourage this, of course, but so, too, will affect advertising. 

   Advertising relies on the techniques of market research to identify potential users of a product. Are they homemakers or professional people? Are they young or old? Are they city dwellers or country dwellers? Such questions have a bearing on where and when ads should be played. By studying readership breakdowns for newspapers and magazines as well as television ratings and other statistics, an advertising agency can decide on the best way of reaching potential buyers. Detailed research and marketing expertise are essential today when advertising budgets can run into thousands of millions of dollars. 

   Advertising is a fast-paced, high-pressure industry. There is a constant need for creative ideas that will establish a personality for a product in the public's mind. Current developments in advertising increase the need for talented workers. 

   In the past, the majority of advertising was aimed at the traditional white family - breadwinner father, non working mother, and two children. Research now reveals that only about 6 percent of American households fit this stereotype. Instead, society is fragmented into many groups, with working mothers, single people and older people on the rise. To be most successful, advertising must identify a particular segment and aim its message toward that group. 

   Advertising is also making use of new technologies. Computer graphics are used to grab the attention of consumers and to help them see products in a new light. The use of computer graphics in a commercial for canned goods, for instance, gave a new image to the tin can. 

What does the passage mainly discuss?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 44 to 50

Due to the nature of our business, it's sometimes necessary that our staff work at night. Night shifts can be particularly demanding on employee wellbeing and health. This can include disruption to the body clock, fatigue, sleeping difficulties, disturbed appetite and digestion, reliance on sedatives or stimulants, social and domestic problems and other symptoms of ill health. To combat this, we do not have employees on night shifts for extended periods. This is because workers’ bodies will just have started to adapt to the new pattern.

We find rotation shifts every two to three days are best for workers and weekly or fortnightly rotations are the least comfortable for workers. Forward-rotating programs (moving from morning to afternoon to night shifts) are better than backward-rotating ones in terms of sleep loss and tiredness.

If someone works at night, there are rules covering the hours they work. Night time working hours are usually between 11 p.m. and 6 a.m. – but this can be flexible and should be discussed between you and us. To qualify as night working, the night time period must be no more than 8 hours long and include the period between midnight and 5 a.m. Any of our staff under 18 years are not allowed to be night workers.

We must make sure that you don't work more than an average of 8 hours in a 24-hour period. By law, you can't opt out of this working limit. We must also keep records of any night workers’ working hours to prove they aren't exceeding night working limits, and we must keep the records for at least 2 years. These records can be inspected by you at any time on request.

Our usual limits and regulations for night workers do not apply to self-employed workers. This does not include agency workers, who are treated as normal workers with us.

If you agree to working at night for us, the agreement will be put in writing. If you are to begin working at night, we must perform a health assessment before you become a night worker and on a regular basis after that. Usually, this is just done with a questionnaire, which was created in collaboration with qualified health professionals. If there are any health questions regarding your health and night work, we will offer you a follow-up examination by a health professional if you still wish to work nights.

(Adapted from IELTS 5 practice Tests – General Set 3 - Tests No. 11-15 (High Scorer’s Choise) – page 109)

Which of the following could best serve as the topic of the passage? 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 39 to 43

In the early days of sea travel, seamen on long voyages lived exclusively on salted meat and biscuits. Many of them died of scurvy, a disease of the blood which causes swollen gums, livid white spots on the flesh and general exhaustion.

On one occasion, in 1535, an English ship arrived in Newfoundland with its crew desperately ill. The men's lives were saved by Iroquois Indians who gave them vegetable leaves to eat. Gradually it came to be realized that scurvy was caused by some lack in the sailors' diet and Captain Cook, on his long voyages of discovery to Australia and New Zealand, established the fact that scurvy could be warded off by the provision of fresh fruit for the sailors.

Nowadays it is understood that a diet which contains nothing harmful may yet result in serious disease if certain important elements are missing. These elements are called 'vitamins '. Quite a number of such substances are known and they are given letters to identify them, A, B, C, D, and so on. Different diseases are associated with deficiencies of particular vitamins.

Even a slight lack of Vitamin C, for example, the vitamin most plentiful in fresh fruit and vegetables, is thought to increase significantly our susceptibility to colds and influenza.

The vitamins necessary for a healthy body are normally supplied by a good mixed diet, including a variety of fruit and green vegetables. It is only when people try to live on a very restricted diet, say during extended periods of religious fasting, or when trying to lose weight, that it is necessary to make special provision to supply the missing vitamins.

(Adaped from the book Practical Faster Reading – A course in reading and vocabulary for upper-intermediate and more advanced students – by Gerald & Vivienne Mosback - page 93)

What is the passage mainly about?