A. try to improve his physical abilities. B. receive medical treatment for brain diseases. C. be given special attention to prevent accidents. D. be examined for other symptoms of brain diseases.
14. What can we learn about the study from the fourth paragraph? A. It was led by Dr Tabara.
B. It included more than 1,300 people. C. It examined people of different age groups.
D. It required the participants to close their eyes first. 15. Which of the following might be the best title for the text? A. Overall Brain Health Deserves Close Attention. B. Brain Diseases Without Symptoms Require Attention. C. Can’t Stand on One Leg---You May Be at Risk of Stroke. D. Can’t Keep Your Balance? You May Have Brain Damage. 第二节（共5小题：每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项多余选项。
Have you ever had the strange feeling that you were being watched? You turned around and sure enough, someone was looking right at you!
16 .To research whether such a “sixth sense” really exists, Robert Baker, psychologist at the University of Kentucky, performed two experiments.
17 .The subjects were eating, drinking, reading, studying, watching TV, or working at computer. Baker made sure that the people could not tell that he was sitting behind them during those periods. Later, he asked the subjects whether they felt they were being observed from behind. 18 .Then, he made another experiment. 19 .The people had to write down when they felt they were being stared at and when they weren’t. Baker found that the subjects were no better at telling when they were stared at than if they had just guessed.
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