such problems. " Since alpha7 receptors are mainly in the brain, drugs that block only these receptors would not have these side effects Vocabulary trigger v引发,引起 addiction n.上瘾 neurotransmitter n.神经递质 dopamine n.多巴胺 insidious a.阴险的 glutamate n.谷氨酸盐 buzz n.陶醉 potentiation n.加强 hippocampus n.海马 prematurely ad.过早地 consistent a.一致的 Reading Comprehension Directions: There are four suggested answers to each of the following questions. Choose the best one according to the passage you have just read. 1. As scientists have discover, process of addiction to nicotine involves A. attachment of nicotine to alpha7 B. release of glutamate by neurons C. release of dopami D. all of the above 2. Which of the following may be the role hippocampus plays in the process of addiction to nicotine? A. It links memory to learning. B. It remembers the pleasure caused by nicotine C. It helps one to breathe nicotine into our lungs D. It is the first part of brain exposed to nicotine when one smokes 3. It can be inferred from the passage that many people keep smoking because A. they do not know the danger B. they want to die prematurely D. smoking can make them feel "high 4. To which of the statement would both Daniel and lan be most likely to agree? A. The more one smokes the more he wants to smoke B. The more one smokes, the less he feels pleased when smoking C. The more one smokes, the more easily he will get a"hit D. The less one smokes, the more easily he will get"highsuch problems. “Since alpha7 receptors are mainly in the brain, drugs that block only these receptors would not have these side effects.” Vocabulary trigger v. 引发，引起 addiction n. 上瘾 neurotransmitter n. 神经递质 dopamine n. 多巴胺 insidious a. 阴险的 glutamate n. 谷氨酸盐 buzz n. 陶醉 potentiation n. 加强 hippocampus n. 海马 prematurely adv. 过早地 consistent a. 一致的 Reading Comprehension Directions: There are four suggested answers to each of the following questions. Choose the best one according to the passage you have just read. 1. As scientists have discover, process of addiction to nicotine involves A. attachment of nicotine to alpha7. B. release of glutamate by neurons. C. release of dopamine. D. all of the above. 2. Which of the following may be the role hippocampus plays in the process of addiction to nicotine? A. It links memory to learning. B. It remembers the pleasure caused by nicotine. C. It helps one to breathe nicotine into our lungs. D. It is the first part of brain exposed to nicotine when one smokes. 3. It can be inferred from the passage that many people keep smoking because A. they do not know the danger. B. they want to die prematurely. C. smoking is a widespread habit. D. smoking can make them feel “high”. 4. To which of the statement would both Daniel and Ian be most likely to agree? A. The more one smokes, the more he wants to smoke. B. The more one smokes, the less he feels pleased when smoking. C. The more one smokes, the more easily he will get a “hit”. D. The less one smokes, the more easily he will get “high