Read the following passage and decide which option A, B, C or D best fits each space. AS OLD AS YOU FEEL It might after all be true that you are only as old as you feel. A British clinic is carrying out new high-tech tests to calculate the “real” biological age of patients (1)_____on the rate of physical deterioration. Information on every (2)_____of a patient’s health, fitness, lifestyle and family medical history is (3)_____in to a computer to work out whether they are older or younger than their calendar age suggests. The availability and increasing accuracy of the tests has (4)_____one  leading British gerontologist to call for biological age to be used to determine when workers should retire. He (5)_____that if an employee’s biological or “real” age is shown, for example, to be 55 when he reaches his 65th birthday, he should be (6)_____to work for another decade. Apparently most employers only take into (7)_____a person’s calendar years, and the two may differ considerably. Some of those prepared to pay a substantial sum of money for the examinations will be able to smugly walk away with medical (8)_____showing that they really are as young as they feel, giving them the confidence to act and dress as if they were younger. Dr Lynette Yong, resident doctor at the clinic where the tests are offered claims that the purpose of these tests will be to motivate people to (9)_____theirhealth. The concept of “real” age is set to be come big (10)_____in the USA with books and websites helping people work out whether their body is older or younger than their years. Others firmly believe that looks will always be the best indicator of age. Trả lời câu hỏi dưới đây: