----- Nội dung dịch tự động từ ảnh ----- A. missing B. loss patient with new research. C. happiness D. success tead the following passage and mark the letter A, B, cor D on your answer sheet to indicate the correct ord or phrase that best fits each of the numbered blanks. Scientists used to believe that our 24 hour cycle of sleeping and waking was governed entirely by external factors. The most notable of these, they thought, were the rising and (23) of the sun. But they have now assured that there is a daily rhythm to a wide range of biological functions including semperature, digestion and mental activity. The main function of this "body clock" is to anticipate and (24) example, body temperature starts to rise (25) the early evening, winding us down for sleep. for external changes so that, for dawn, gearing us up for the day, and begins to fall in (26) Some people's body clocks keep poorer time than others, which can greatly disturb their lives and even their health. Insomnia, depression, fatigue, poor work performance and even accidents can all be or aggravated by inaccurate body clocks. (27) C. dipping D. setting 23. A. descending B. diving C. steady D. prepare 24. A. dispose B. scheme C. around D. nearly 25. A. beside B. approximately C. injure D. threaten B. spoil 26. A. risk C. Caused D. made 27. A. put B. formed