While the money matter is a very common problem for the old, loneliness is another problem that old parents may face. Of all the reasons that explain their loneliness, a large geographical distance between parents and their children is the main one. This matter is known as "Empty Nest Syndrome" (空巢综合征).

In order to look for better chances outside their countries, many young people have to go abroad. They leave their parents behind with no clear idea of when they will return home. Their parents spend lonely days and nights taking care of themselves, in the hope that someday their children will come back to stay with them. However, after the children go abroad, they will change a lot. The values they hold do not match what their parents hold. The geographical and cultural distance also stop the grown-up children from providing response(回应)in time for their old parents living by themselves.

The situation in which grown-up children live far away from their old parents has been described as "Distant Parent Phenomenon". It is common both in developed countries and in developing countries.

Do you want to study science about nature? you want to, try to study outside. Now, the Natural History Museum of Los Angeles County (try) to bring its visitors outdoors.

The museum (turn) an outdoor place into a campus (园区). It was park full of cars. But now it has become home to plants, birds and insects. It gives children a good way (get) close to nature.

Last week, Mrs Eng and her students visited the museum's outdoor campus. Mrs Eng said the children could only see pictures plants in books. However, in the outdoor campus, they spent time (learn) to grow plants and water them. They could increase knowledge and enjoy (them) at the same time.

Also, the children could find (answer) to some questions. For example, what do strawberry plants look like? Where does tomato sauce(酱)come from? The children learned a lot from the visit. Mrs Eng said they really had a (wonder) time there.

Kids, like adults, love to visit museums as they are wonderful places to learn about the history and culture of the world. There are many excellent museums across the world that are specially tailored for children and their families. Here are four of the best children's museums in the world.

Music has great power and it plays an important role in people's lives. People of all (年龄)love it. Most music fans love not only the songs of their favourite singers, but also the stories (在……后面)how the music came into being. (难怪)over half a million people go to music museums around the world every year. Here are two of the best music museums in the US.

Graceland

Graceland is in Tennessee. Singer and actor Elvis Presley once owned (拥有)it. His daughter has controlled it (自……以后)his death. It is located in the inn of Graceland Whitehaven community. It opened to the (公众)as a museum on 7th June 1982. Since (那时), great changes have taken place in Graceland. So far, over 750, 000 people have visited the meditation garden where Elvis Presley was interred(埋葬).

The Museum of Pop Culture (MoPOP)

MoPOP is one of the must-see places if you go to Seattle. The . (整个的) building is 140, 000 feet high. MoPOP is meant to show all the (能量)and beauty of music. Microsoft co-founder Paul Allen (创建)it in 2000 as the Experience Music Project. From then on, MoPOP has held lots of music (展览会). Seventeen of them have toured across the US and around the world.

The Please Touch Museum is a special museum where people can touch1. The Please Touch Museum is a2museum located in the Centennial District of Philadelphia, Pennsylvania, the US. The museum focuses on teaching children 3interactive exhibits (互动式展品)and special events, mostly aims at children of five years old and younger.

The museum originally opened at the Academy of Natural Sciences 4October 2nd, 1976, in a2, 200-square-foot space, and then5to another location on nearby Cherry Street two years later. It has moved many times. On October 18, 2008, the museum opened at its current location with a larger facility and 6exhibits.

There are many things children can 7 and touch in the museum. In each area, there are different activities 8 children to do. Come with me to enjoy it!

Walking Piano

There's a super big piano on the 9. Do you want to play it? It's very 10. Just walk on the piano. Then you can play beautiful music.

Alice in Wonderland

You can go down along the11 hole like Alice did in the famous story. There you can meet the queen and Mr Rabbit. You can even have tea with12.

Flight Fantasy

Do you want to 13your own rocket(火箭)?Please come to Flight Fantasy. You can 14 dress like an astronaut and get into a rocket. You can have a chance to feel the 15. That is a special experience for every child.

Mum, don't always me my cousin.

Go and my cup tea, will you?