Units1-4 六选五阅读期中练习 2026-2027学年沪教版英语八年级上册

Units1-4六选五阅读期中练习

Unit 1 Look it up!

Passage 1 如何高效使用线上百科（检索技巧）

When we meet new questions while studying, online encyclopedias are great tools. 1____ But many students do not know how to use them properly and waste lots of time.

First, you need to turn a big question into several small, clear keywords. 2____ If you type a whole long sentence, the result will be messy and useless.

Second, check where the information comes from. Trusted websites mark their writers and references. 3____ Some pages are written by common users and may have wrong facts.

Besides, do not copy everything you read directly. Good learners use the facts to form their own ideas. 4____

Finally, keep a note of useful sources. You can go back and check them again later. 5____ Good searching skills will help you learn for a long time.

A. It helps you organize what you have found.

B. They offer quick answers to almost all kinds of facts.

C. You should avoid information without clear sources.

D. Short and simple words work much better for searching.

E. You can ask your teachers to write keywords for you.

F. In other words, they think critically instead of accepting information blindly.

Passage 2 古代百科类书籍的发展

Long before the Internet, people kept knowledge in big written books — early encyclopedias. 1____ They were hand-copied, so only rich people could get one.

One famous ancient Chinese encyclopedia was finished hundreds of years ago. It collected articles from thousands of books. 2____ Workers spent years copying and checking every part.

At that time, these books were not easy to update. When new facts appeared, writers had to make new copies. 3____ That made them heavy and expensive.

Later, printed encyclopedias became popular in Europe. 4____ More people could read shared knowledge for the first time.

Today, most encyclopedias move online. They can change and add new information in minutes. 5____ However, the core goal stays the same: to collect and share human knowledge.

A. Printing made them cheaper and easier to make.

B. The earliest ones appeared more than 1,500 years ago.

C. It took a huge team of writers to finish this great work.

D. They added more information to the old books.

E. This big difference separates them from old paper ones.

F. Students no longer need to read thick heavy books at all.

Unit 2 Amazing numbers

Passage 1 斐波那契数列在自然界

Many people think numbers only exist in math class. 1____ One special set of numbers, the Fibonacci sequence, appears everywhere in nature.

The sequence starts with 1, 1, 2, 3, 5, 8 and so on. 2____ Each new number comes from adding the two numbers before it.

You can see this pattern on sunflower heads. The seeds grow in two groups of curves. 3____ The number of curves almost always follows Fibonacci numbers.

Pinecones and some kinds of leaves also follow this rule. 4____ Scientists still wonder why so many plants grow in this way.

This amazing pattern shows that math is not just man-made rules. 5____ It is hidden inside the natural world around us.

A. However, numbers are all around us.

B. It is something we discover, not something we invent.

C. It is not hard to find out how this sequence works.

D. Few students have heard of this special math rule.

E. Even so, nobody has found a full answer yet.

F. It helps plants grow and receive sunlight well.

Passage 2 大数的理解与对比认知

Big numbers such as million, billion sound simple, but they are hard for our brains to imagine. 1____ Our minds are good at small numbers but weak at huge ones.

Let’s take one billion seconds as an example. Many people guess it is just a few days. 2____ In fact, one billion seconds is nearly 32 years. That surprises most learners.

To understand big numbers better, people often use comparisons. 3____ Comparing a large number to something familiar makes it easier.

News reports often use big numbers to talk about population or money. 4____ Without proper comparisons, readers may not truly get the meaning.

Learning to read and explain large numbers is useful. 5____ It stops us from misunderstanding reports with huge figures.

A. Numbers alone can be hard to imagine.

B. That is because our daily life seldom uses such numbers.

C. They mean nothing if we cannot picture them.

D. A simple example can help us see the gap clearly.

E. You can turn a huge number into a story or a picture.

F. We can make sense of news and data more easily.

Unit 3 Our digital lives

Passage 1 青少年屏幕时间管理

Digital devices bring great convenience to teenagers. We chat, study and relax on phones and tablets every day. 1____ Too much screen time creates hidden problems.

Many teens lose track of time online. They plan to study for 30 minutes but end up watching short videos for hours. 2____ It also makes it harder for them to fall asleep at night.

Experts suggest simple rules for digital use. 3____ For example, keep phones out of bedrooms during sleeping hours.

Another good idea is to set clear goals before you go online. Ask yourself: “What do I need to finish?” 4____ Once you finish the task, turn off the screen at once.

Digital life is helpful only when we control it. 5____ Wise digital habits protect both our health and study.

A. However, we should not let these tools control us.

B. Too much online time hurts students’ eyes and attention.

C. It is impossible for teens to stay away from digital products.