Unit 4 Section A (2a-2d) 同步练习 2026-2027学年人教版英语九年级上册

Unit 4 our Memory

第2课时 Section A 2a-2d

阅读理解

Many of us learn how to ride a bicycle at a young age. As we grow older, we may stop riding-most of us go to school by bus or by subway. But whenever we get on a bicycle, it's like we've never stopped biking.

This is strange. In many other cases, our memories let us down. We often find it hard to remember the name of a person or a place, don't we? So why can we still ride a bicycle after we stopped riding a long time ago?

It turns out that there are many types of memory. They are stored in different parts of our brains. Memories of experiences(e. g. our first day at school) and of factual knowledge(e. g. the capital of France) are called declarative memories.These memories can be communicated to others. Skills such as playing an instrument or riding a bike are call procedural memories. These memories are responsible for our performance.

Scientists have done many experiments on different memory types. The most famous of them was carried out on Henry Gustav Molaison, an epileptic（癫痫患者）. In an operation in the 1950s, part of his brain was taken away. After that, the man suffered less from epilepsy. But there was a new problem. Molaison's memory system went wrong. Through tests, scientists found he could learn new skills slowly. However, he could never remember having been trained to learn a new skill. In other words, Molaison could develop new procedural, but not declarative memories.

Scientists have concluded that even with serious brain injuries, procedural memories last much longer. However, they haven't yet found out why.Some say procedural memories are more lasting because they are stored in the brain's center.

Now, "just like riding a bicycle” has been used as an idiom. Can you guess its meaning?

(   )1.How does the writer start the article?

A. By telling the difference. B.By giving an example. C.By listing the number.  D. By asking questions.

(   )2. Which of the following is an example of procedural memory?

A. Playing the piano. B. The first time I rode a bike. C. Our first day at school.  D. One trip to France.

(   )3. What's Henry Molaison's problem after part of his brain was taken.away?

A.His illness became worse. B. He couldn't learn new skills.

C.He could never remember anything. D. He couldn't develop declarative memories.

(   )4. According to the article, scientists don't yet know for sure      

A. if there are many different types of memory

B. if procedural memories always last longer than declarative memories

C. why procedural memories often last longer than declarative memories

D.whether different types of memory are stored in different regions of our brains

(   )5. What's the meaning of "just like riding a bicycle"?

A. A gift that one is born with. B. A task that takes a long time to finish.

C.A skill that will never forget. D. A memory that is always in the brain.

完形填空

Kevin used to believe that he had the world's worst memory. He could never remember the names of new classmates, and he often   1   his homework at home. His teacher, Ms. Yang, once asked him, “Do you really have a bad memory, or have you never learned how to use it well?”

Kevin had no answer. That evening, he searched online and found a talk about memory. To his surprise, he learned that memory is not a 2  you are born with. It is more like a muscle（肌肉）that grows when you 3  it．

The next morning, Kevin decided to make a change. In class, instead of just writing down every word, he tried to find the main 4  of each lesson. After school, he   5   his notes into small parts and reviewed one part at a time. He also began to sleep early, 6  the talk said that sleep helps the brain store information.

  7,things were not easy. Kevin still forgot things now and then, and he felt 8.But Ms. Yang told him not to give up. “Every small step counts,” she said gently.

Three months later, something surprising happened. Kevin could remember his classmates' names, and he did much better in his history test. When his friend asked him the 9, he smiled and said, "I did not get a new brain-I just found the right way to use the old one.”

Now Kevin is not afraid of forgetting anymore. He knows that a good memory is not about being  10; it is about finding a method that works for you.

(   ) 1.A.left B.lost C.forgot

(   )2.A.sense B.method C.gift

(   )3.A.create B.train C.collect

(   )4.A.mistakes B.problems C.points

(   )5.A.divided B.threw C.turned

(   )6.A.when B.if C.because

(   )7.A.At once B. At first C.At least

(   )8.A.careless B.relaxed C.hopeless

(   )9.A.opinion B.reason C.plan

(   ) 10.A.clever B.lucky C.famous