特训07 阅读理解（名校模拟 说明文12篇）-2024年中考英语二轮热点题型归纳与变式演练（江苏专用）

特训07 阅读理解说明文 （名校模拟12篇） （时间90分钟，满分100分） 学校:___________姓名：___________班级：___________考号：___________ 一、阅读理解 （23-24九年级下·江苏南京·阶段练习）What is the most stressful part of school? It is probably the exams. Exams can put us under a lot of pressure. But some students do better under pressure, while others do not. So, why do some students perform better under stress? It all comes down to dopamine (多巴胺). Dopamine is a chemical in our body that sends signals to the brain. It has many important roles—it affects our memory, attention span and how we learn. Our brains work best when there is a balance of dopamine—not too much or too little. Our brains control dopamine in two ways. It either takes out dopamine quickly or gradually (逐渐地). Exam success can be linked to how fast dopamine goes back to an even balance, according to new research from the University of Missouri. What happens when we take an exam? If you become stressed, your brain will start to overload on dopamine. It is like a cup overflowing with water. The quicker you are able to go back to an even balance of dopamine, the quicker you can concentrate, helping you perform better on a test. Scientists found that during a test, people who slowly got back to an even balance of dopamine scored eight percent lower. That’s the difference between a good grade and a bad grade. But don’t fear—there is good news for every student. The study also found that the more practice you get, the less stressed you’ll be. So, it turns out that practice really does make perfect. 1．Dopamine is a chemical in our body that ________. A．we need in order to think B．keeps our brains working C．sends signals to the brain D．puts us under a lot of pressure 2．Which areas does dopamine play a role in? ① remembering things                         ② getting enough rest ③ paying attention to teachers                    ④ affecting the way we learn A．①②③ B．①③④ C．②③④ D．①②④ 3．What does the underlined word “overload” mean? A．raise the pressure of something B．st