Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks. The expression on your face can usually dramatically alter your feelings and perceptions, and it has been proved that _____(41) smiling or frowning can create corresponding emotional responses. The idea was first _______(42) by a French physiologist, Israel Waynbaum, in 1906. He believed that different facial _____(43) affected the flow of blood to the brain, and that this could create positive or negative feelings. A happy smile or irrepressible_____ (44) increased the blood flow and contributed to joyful feelings. But sad, angry expressions decreased the flow of oxygen-carrying blood, and created a vicious_______ (45) of gloom and depression by effectively starving the brain of essential fuel. Psychologist Robert Zajonc rediscovered this early subject, and suggests that the temperature of the brain could affect the production and synthesis of neurotransmitters, which definitely influence our moods and energy levels. He argues that an impaired blood flow could not only deprive the brain of oxygen, but also create further chemical imbalance_______ (46) inhibiting these vital hormonal messages. Zajonc goes on to propose that our brains remember smiling associated with being happy, and that by deliberately smiling through your tears you can ______(47) your brain to release uplifting neurotransmitters replacing a depression condition ____(48) a happier one. People suffering from psychosomatic _____(49) , depression and anxiety states could______ (50) from simply exercising their zygomatic muscles, which pull the corners of the mouth up and back to form a smile several times an hour. Trả lời cho các câu 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 dưới đây: