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The king thought and accepted the wise man's challenge.

The smart desk may be one of of all time in our school.

Failure always success. Don't be afraid of taking actions.

AI in the modern world.

With the arrival of AI, a large number of important changes around the world.

In July, the use of electricity in my house sharply because we use air conditioner everyday, but it slowly goes in October.

Please all the questions.

Suddenly, the dinosaurs , and nobody knows why.

During the National Day holiday, tourists came to visit the Canton Tower.

We shouldn't our parents after we grow up.

It is rude to your classmates.

People call Molly's grandmother a "walking encyclopedia" because she knows a large a of knowledge. How can she do that?

The first secret is that she has a colorful life. When she was young, she went to different parts of the world. Several years later, she was married to John and their son was b. Therefore, she began taking care of her kid at home i of travelling everywhere.

From then on, she started to read many different t of books, including story books, magazines, guide books, dictionaries and so on. Even when she meets difficult contents (内容) in books, she always keeps a positive attitude and never gives up trying to understand them.

That's why Molly's grandmother knows e.

The main reason for using 11 digits is that we have a large population. But as our population grew, there were not enough numbers for us to use. So we began to use 11 digits starting from 1999.

11 digits can be used to make tens of billions of mobile phone numbers. That's enough for each person to have seven or eight phone numbers to use in China. Usually, the service provider will reuse a canceled number after three to six months. If you call a number that you haven't contacted (联络) for a long time, you may find that its owner has changed.

Besides China, Britain and Japan also use 11-digit mobile phone numbers. But their numbers always start with "0". Countries like the United States, Australia and India use phone numbers with 10 digits, while Canada's mobile phone numbers are also 10 digits long, the same as those in the United States.

A. We once had 10 digits.

B. The 11 digits can be divided into three parts.

C. Also, mobile phone numbers can be recycled.

D. And the last four digits are random (随机的).

E. So they cannot create as many numbers as we can.

Last week, Guangming Research Centre made surveys among 1,000 residents (居民) in Xingfu community. The surveys were mainly about different types of e-waste and how the residents deal with e-waste. The diagrams below show the results.

E-waste is the world's fastest-growing kind of waste, and only a small part of it is collected and recycled. Some residents think they should recycle e-waste, because e-waste includes many valuable metals, such as gold, silver and so on. They say they try to repair some electronic devices rather than buy new ones. They also give away their electronics which they don't like anymore to people in need.

As Henderson State University scientist Renn Tumlison explains, the spots camouflage baby deer very well. That's because they look like patches (斑) of sunlight that shine through trees and other plants and land on the forest floor. A baby deer's best way of living is to simply hide itself in the environment.

When you see a baby deer hiding among the leaves alone, it's hard to imagine a weaker animal. But in fact, being alone is another way of protection. For the first few weeks of a baby deer's life, its mother only comes to feed it or lead it to a new place, because adult deer are easier to see and smell than their babies. A mother's absence (缺席) helps cut down the risk of drawing a predator (捕食者) straight to her baby. When the baby is able to run as fast as its mother, they start spending more time together.

The baby deer won't have their spots forever. When a baby deer is somewhere around three or four months old, the spots begin to disappear. However, some kinds of deer don't ever lose their spots—like the fallow deer and the sika deer.