Every year, thousands of young inventors show their ideas at NICEE. Some kids get invited to NICEE. The main goal of NICEE is to help kids know real problems and find ways to __________ them.

To support this __________, many schools now have invention clubs. Kids in the clubs work together. They look __________ ways to make life better. They might invent something to make a job __________ or make people safer.

For example, Lucca wanted to help people __________ his grandmother. She had to wear a breathing mask(面罩) in the hospital. That made it hard for others to hear her __________. So Lucca invented a new mask. It has a microphone. It __________ the person’s voice to a speaker(扬声器). Now users can talk with others.

Inventions can be simple. One winner, Maddox, made a new garden shovel (铁铲). The shovel has marks on __________ to help gardeners know how deep to dig their holes.

__________ kids choose an idea, they have to build a model that works. They cannot spend more than $50. The invention must be something new. It also must fit inside a certain space.

NICEE shows the best inventions from the states. Young inventors get to meet one another. They see others, great ideas. Some of them win prizes. They can __________ learn about ways to sell their inventions.

The next time your dog chews up your homework or favorite T-shirt, don’t spend your time advising him or her because dogs don’t have the feeling of being shy according to scientists.

Dr. Bonnie Beaver has found this surprising fact. She does tell owners to let it go instead of punishing it, when their dogs do something wrong. As for that sorry look? It is something your dog uses to stop your angry shout. Whenever it starts, he or she sits down with a sorry look.

In 2009, Alexandra Horowitz, a teacher in a college, made a study on 14 dogs. She videotaped each of them several times to see what they did after they were ordered not to eat the food in front of them and left alone in the room. Only five of them agreed, while others ate up the food as soon as the owner left.

Yet all of them had the same look of shame when they were scolded by their owners. In her report named Inside of a dog, she said that while dogs may feel some sorry, the “look” that we humans associate with(与……联系) shames, is not when they are feeling it. They are just smart enough to know that it helps to make their owners feel good. They just do it to stop their owners from getting angry.