Where are they?

    This is Tommy's bedroom(卧室). You can see a small bed 1the room. There's a toy(玩具)on the bed. You can see a light（灯）on the drawer. 2the photo? It's on the drawer，too. You can see 3on the chair. Where are the plants? They are4. The alarm clock, the pen and a cup 5on the table. 6you see a math book? Yes, it's on the floor. 

    Mabel is a beautiful girl. She likes all kinds of clothes, but she didn't1 her heart into her lessons when she was at school. With her friends' help, she finally finished middle school, 2 she learned little there. Of course, she can't do any important work and now she is a salesgirl in a 3 She has to work there and hopes to find a better one .

    One afternoon the girl argued with her mother angrily. So the following morning, . When she served an old man, she was very4 The old man chose a pair of shoes and bought them. Before he left, he asked, "How 5  will the shoes last?"

"It depends. If you don't use them .the shoes will  6  be broken. "

The old man  7 nothing and went away. That afternoon, while Mabel was  8  for supper, she cut her finger. She had to go to a hospital. That old man happened to be on duty. After Mabel got the medicine from him, she asked, "When will I get 9 ?"

    "It depends, "said the old man. "If you don't use 10 , you'll lose your finger. "

    What do you do at weekends? Some people like to 1 at home, but others like to go for a walk 2 have a picnic. My friend Jack works hard in a factory during the 3. At weekends he always4the same thing. On Saturday he 5 his car and on 6 he takes his family to a nearby village. His uncle and aunt have a farm there. It isn't a 7 one, but there's always 8 to do. The children help with the animals and give them their 9, Jack and his wife help in the fields. At the end of the day, they are all 10 and Jack's aunt gives them a big meal.

①Eating good food and getting proper exercise are important to stay healthy. Getting enough sleep is important, too. Experts say that teenagers between the ages of 15 and 20 need 8 to 10 hours of sleep each night. 

②Your body needs to take a rest from all the activities it has done during the day. Your brain needs a rest, too. You are likely to get sick easier without enough sleep. 

③You have a "24-hour clock" inside your body that tells you when to be awake and when to go to sleep.  ▲  Blue light that comes from the Sun tells your brain to keep you awake during the day. When there is no blue light at night, the brain tells the body that it's time for sleep. 

④There are many things that stop the brain from telling your body when it's time to sleep. One of these is blue light at night. Today, people spend a lot of time watching television or looking at screens on computers or smart phones. These devices (装置) give off blue light. If you look at them at night, the blue light can trick your body into thinking it's daytime. Then it is more difficult to go to sleep.

⑤What should you do to get good sleep? Experts say that you shouldn't look at screens that give off blue light for at least one hour before going to sleep. 

⑥ Do not watch TV or use anything with a computer screen in bed. If you need to do something to fall asleep, it is better to read a book. Also, keep your bedroom as dark as you can. This will help you sleep well. 

If you've ever used pi in math class, you probably used the number 3.14. In fact, the number for pi is much longer. Pi is called an irrational number (无理数) because the digits (数位) after the decimal point (小数点) never end or repeat. 

} 

>In 2015, a young man from India named Rajveer Meena set a world record by memorizing 70,000 digits of pi. But pi is much longer than that. 

On Pi Day ( March 14th) this year, a company called Solidigm said it calculated (计算) pi to105 trillion (万亿) digits. And the 105 trillionth digit is 6. It broke the record for how many digits of pi we know. 

Pi is really useful for circles in math. It helps us connect the circumference with the diameter of a circle. 

Even NASA scientists use pi for their work of studying space. But they only need about 15 digits of pi for their calculations. 

Calculating pi also has another important use. It's how scientists test new computer programs and data storage systems (数据存储系统). 

Solidigm's calculation of pi took around 75 days to finish. The company's owner Brian 

Beeler said that the achievement needed a lot of work. They had to plan the calculation very carefully. 

This isn't the first time that Solidigm has calculated pi. In 2022, Google Cloud calculated 100 trillion digits of pi. Solidigm matched that in 2023. 

In the future, we'll keep finding more and more digits of pi. We'll never be able to calculate all the digits of pi because it goes on forever. But it still helps us see how great computers can be. 

What does a lifelong learner look like?

Lifelong learners never think of themselves as the greatest experts(专家)in anything. They continue to learn and bring a great deal to the groups they belong to. What does a lifelong learner look like? Here are some of their main characteristics(特征).

They are knowledge seekers. They are always searching for much information on a topic they're interested in and looking for new experience or opportunities to improve their knowledge or skills.

They are social and self-directed learners. They like taking different courses and taking part in discussions around subjects they are interested in. ____ They also know their own learning styles, and their strengths and weaknesses. They can plan and organize their own learning.

They are critical(批判性的)thinkers. They always use a lot of ways to analyze(分析)and synthesize(合成)information. From their research they judge the information to see if it is useful for the question at hand.

They are problem solvers. They will meet different problems while learning. However, they usually see problems as challenges and life experiences and try to stand above them.