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2. A chemical company is considering options for eliminating harmless chemical sludge from the following 2 options. (1) Prepare the site for landfilling in the factory. This option requires the initial investment for purchasing the essential equipment 130,000 Baht. Each year there will also be a cost of landfill operation 95,000 baht per year. At the end of its service life of 3 years, the equipment used within the landfill site will have a salvage value of 20,000 baht. (2) Hire a chemical sludge removal contractor to remove sludge. The contract term must be 6 years. The cost of contract to be paid to the contractor are 110,000 Baht a year in year 1-2; 115,000 Baht in year 3; 120,000 Baht in year 4; 125,000 Baht in year 5; and 130,000 Baht in year 6. a) (13 marks) If the company finances the money for this project by borrowing from a bank in which the bank charges interest on loans at the rate of 3.86% per 6 months, compounded every month. Which option should this chemical company choose? b) (5 marks) The company executives believe that the option of establishing a landfilling site within the factory seems to be a more sustainable alternative for the company. If the selection in question a) above did not select the landfilling site option, please suggest how much the initial investment for purchasing the equipment should cost so that the landfill option would be selected (assume the same salvage value of the equipment)?

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20 10 15 Study Suggests Sitting Less Can Extend Life Track 6 Karzmarzy studies, which government-ru people spend Not only sitting less, th could add an People ask, "Is it eve "That's never too la know that y Katzmarzyl Cham to desk de "Tha They may desk. I've for every can go fo Katzmar • By Rebecca Widiss VOAnews.com hat's the best seat in the house? It may be whichever one you use the least. New research suggests that cutting daily sitting time to less than three hours might extend your life by two years. W Humans were designed to move. But modern lifestyles and office jobs rarely prom us to roam around. Quite the opposite, says Peter Katzmarzyk, an epidemiologist at the University of Louisiana. "Sitting is ubiquitous in our lives today. You know, we sit while we're eating, we sit in the car, we sit while we watch TV. And many of us sit for many hours at work. So on average, Americans report they sit between four and a half to five hours a day," Katzma said. team to And, as he says, those chair-centered days matter to our health, just like exercise "We can't throw away physical activity. It's extremely important. We have 60 years of research showing us that. But sedentary behavior is also important. . . . If you exercis for 30 minutes a day. What goes on in the other 23 and a half hours a day is also very important," Katzmarzyk said. Ka occupa and do we sp Katzmarzyk and his colleagues are part of a new generation of researchers trying discover how sitting all day affects our lifespans. "This is a relatively new area of study. . . . Studies that have assessed the relations between sitting and mortality or television viewing and mortality are very rare. There's of been a few of them, actually five or six now, in the last four or five years," said Katzman 66

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chance to show how well you understand written English. There directions for each part. ONE HOUR AND FIFTEEN MINUTES PARTS 5, 6, AND 7 OF THE TEST. missing word. Four possible answers follow the sentence. nd fill in the corresponding oval on your answer sheet. 20 105. In order to keep an accurate record of your- your time card when work hours, you arrive and when you leave. (A) punch (B) punches punched (D) punching 106. As soon as the paychecks (A) arrived (B) arrive (C) arriving (D) will arrive # ned- the office manager will distribute them to the staff. on time. ) unless though because however Ms. Wilson was fired she always arrived late and never finished her work ss is very organized and tidy and that we keep the office neat. WS S es PRACHIAL TOEIC PRACTICE TEST 109. Mr. Lee works very hard and always meets his deadlines, he still hasn't been given a promotion. (A) Since (B) Even (C) Despite (D) Although 110. He an employee of this company ever since he first started working. (A) is (B) was (C) has been (D) will be 111. The walls are in bad shape and will require before we can begin painting them. (A) preparation (B) preparatory (C) preparer (D) prepare 112. If we had worked through the night, we (A) should (B) might (C) must (D) will have finished the report on time. 113. It is necessary to have at least one advanced. in today's degree in order to job market. (A) compete (B) purchase (C) observe (D) contract 114. Because so few people showed for the meeting, we decided to postpone it to a later date. (A) through (B) down (C) off (D) up 115. Our corporate headquarters are located on a hill high the city with a spectacular view of the entire valley. (A) beyond (B) above (C) next to (D) across from 116. If you wish to speak with the director, you have to an appointment first. (A) call (B) invite (C) schedule (D) receive 117. Customers don't necessarily resist paying more for a product if they feel the is high. (A) quality (B) quantity (C) quantify (D) qualify 118. We 49 all employees of this company to arrive at the office on time every day. (A) hope (B) deem (C) intend (D) expect 119. All expenses must be approved the department head at the beginning of each month. (A) by (B) to (C) for (D) from 120. The next staff meeting will in the large conference room on Friday morning at 10:00. (A) go to (B) take place (C) attend (D) adjourn

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Name 1. Either my mother or my father 2. The man with all the birds 3. Mathematics วิชาภาษาอังกฤษ 5 (อ31101) Subject-Verb agreement exercise 3 4. Somebody (is/are) Andy's favorite subject. (is/are) John's favorite subject, while Civics (is/are) not taking it too well. 5. Everyone involved in the accident (is/are) making a statement and someone else by the police. 6. The weather in some African countries August. 7. The deaf 8. A number of Covid-19 cases (is/are) coming to the meeting. (lives / live) on my street. (is/are) not hear at all. 9. The number of crimes in New York city recently. 10. The police 11. The Portuguese. mariners. 12. Neither the actors nor the director closely. 13. Almost all of the flour 14. Eight dollars 15. There Class (have / has) been reported. (is / are) investigating the matter. (have / has) been questioned (is/are) boiling hot in 16. 17. All of the CDs, even the scratched one,. 18. Arabic the Western world. 19. In Africa, measles 20. Some of the people waiting in line. 21. No one 22. Twelve miles. 23. Each of the cars in the street 24. Ted and Lydia 25. My brothers or my sister 26. Romeo and Juliet (have/has) long been renowned as great (is/are) only one left! (Is / Are) the tweezers in this drawer? (was / were) used to make a cake. (is/are) the price of a movie these days. (were / was) fifteen candies in that bag. Now there 27. A red and yellow car. 28. One of the cities she would like to No. (have/has) increased .(is/are) following the lines. (is/are) in this case. (is/are) also becoming a popular language to learn in (is/are) still killing children. 29. Some of the countries they may have visited to be Nigeria and Egypt. 30. The mascot, as well as the hockey players, volunteers) at the school. (have/has) finished reading the book yet. (is / are) a long distance to run. (is/are) new. (visit / visits) their uncle every weekend. (have / has) the key. (is/are) a famous love story. (is/are) waiting outside. (is/are) getting impatient. (live / lives) is Toscana. (seem/ seems) (volunteer /

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