Julio Castro lives in Santa Clarita Valley and teaches Maths at a high school. Every ________, he gets up at 4:30 a.m. He does not have a car, so he always spends about four hours getting to and from the ________. He returns home sometimes as ________ as 9:30 p.m.—his three young children have already gone to sleep.

Mike is one of Castro’s students. He happened to see Castro looking at cars online. “He always wants to ________ all his time to students,” said Mike. “He will ________ his lunch break to help a student and stay in his office after school. He ________ helps the students who aren’t in his classes. He is really a good teacher.”

Mike ________ to get Castro a car. During a months-long fundraising activity, Castro’ students, aware of his transportation difficulties, ________ more than $30,000 to buy him a car. They also bought ________ a year’s worth of gasoline and car insurance (保险).

“I feel ________. I want to thank my students for doing this. They are like my children as well,” Castro said. “Now that I have a car, I can get to drop ________ my children at school every morning. Then I come to school with time to spare. I can use it on my ________ plans. On my way back, traffic is still bad, but I will be able to ________ it for dinner.”

“No matter ________ happens to him, Mr Castro is going to find some ways to solve it.” the school principal said. “We should ________ people around us as you’d want to be treated. Mr Castro just does as that. With this car, with this new opportunity, he is going to find more and more ways to help other people around him.”

Mike Huss started working at Ione Elementary School as a janitor(看门人). He has been the principal of the elementary school since last year.

Huss used to be a student at this elementary school, but he didn’t do well in his studies. After graduating from high school, Huss became a janitor at his elementary school. His coworkers, friends and family saw how he interacted(互动) with the kids and encouraged him to get his teaching degree. Then he went for it. “I wanted to show my son that if his dad can keep studying and become a school teacher, he can complete anything in life,” Huss said.

Huss was looking forward to teaching the 5th grade when he got the offer to be the elementary school’s principal. He said, “They reached out to me and said, ‘We think you are the leader that the school needs.’”

Huss has only been a principal for a few months, but he already has a lot of support from his school district, his school staff and his young students. “Some students give me hugs and say,‘You are doing a great job.’ and it is really cute to see them tell me that. They don’t even know what I am doing exactly,” Huss said.

If one day you could travel to the moon, what would you bring with you? NASA’s new “lunar backpack” may be a good choice.

NASA has developed a “lunar backpack” for future astronauts on the moon. The backpack could give astronauts the ability to create a 3D map of the surface of the moon, according to the Daily Mail.

Remote sensing in the backpack uses light detection（检测）and ranging laser (测距激光) light to measure range. It makes use of an innovative type of scanner to provide the range of millions of measurement points per second. These measurement points instantly create a real-time navigation system, delivering a 3D high-resolution map of the surrounding terrain (地形), according to NASA.

The backpack will ensure the safety of astronauts and rover (探测器) vehicles in the GPS-denied environment of the moon. It can identify distances to far-off landmarks and show explorers in real time how far they’ve come and how far is left to go to reach their destination, Michael Zanetti, project lead of the backpack, said in a statement.

The traditional Chinese lunar calendar has 24 solar terms in a year. Ancient Chinese people c    61     this system to mark the change of time based on the sun’s movement.

In ancient times, this system guided agricultural production, telling f    62     what to do according to the changes in temperature.

Nowadays, 24 solar t    63     could help with farming and guide Chinese people in e    64     life. They r    65     people to adapt to (适应) the changes in seasons and eat suitable food. The terms have become i    66     parts in Chinese people’s lives. As people’s understanding of t    67     culture deepens, cultural and creative products (文创产品) by 24 solar terms have a    68     appeared.

This ancient time system has gained new charm in the new era. At the opening ceremony of the Beijing 2022 Winter O    69    , the director used a new countdown (倒计时) method-presentation of 24 solar terms i    70     of numbers. This creative method was greatly praised by people around the world.

How to keep safe in daily life

Recently, more and more attention has been paid to teenagers’ personal safety