Tham khảo tài liệu 'the complete guide to the toefl ibt reading part 13', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Reading Review Test 181 13 of 39 The word Remarkably in the passage is closest in meaning to O logically O generally O amazingly O naturally 14 of 39 In paragraph 2 which of the following is NOT mentioned as one of the problems with fluorescent lights O The need to replace them often O An annoying sound O The harsh quality of the light they produce O Their tendency to flicker 15 of 39 According to the passage a red LED is different from a green LED because it O is made from different materials O uses a different amount of energy O uses a red plastic filter not a green one O produces less heat 16 of 39 The word they in the passage refers to O white-light-emitting diodes O digital clocks calculators toys and similar devices O engineers O red orange and green LEDs 17 of 39 In paragraph 5 what achievement of Shuji Nakamura does the author mention O He discovered the chemical compound gallium nitride. O He invented the first WEED. O He found a way to combine blue green and yellow LED light. O He developed a bright blue LED. 18 of 39 It can be inferred from the passage that the most recently developed type of LED is a powerful O red LED O white LED O blue LED O green LED 19 of 39 In paragraph 5 the author compares one type of WLED with fluorescent light because they both O use ultraviolet light O are filled with gas O employ a chemical coating O are energy efficient Reading 182 Section 1 Guide to Reading 20 of 39 From the information in paragraph 5 it is clear that WLEDs could be used in homes today if they were O not so expensive O easier to install O twice as efficient as incandescent lights O available in various colors 21 of 39 The author gives details about the use of kerosene lights in paragraph 6 in order to O explain why people in developing countries prefer kerosene to electrical light O show the problems and dangers associated with this form of lighting O give an example of a type of lighting that is not as important as it once was O demonstrate that kerosene .
