When I visit the Science Museum, I go to Launchpad. This is my favourite room1I can do physics experiments. For example, if someone wants to fill a bag with2sand, he has to move a kind of truck on wheels into the correct position, I also go to Rocket Show. I can learn how we travel3space and back again.

    Then I go upstairs to the Human and Nature Room. People can4their speed with animals there. Hear a noise and push a button. If people aren't fast5, the lion catches them! I'm faster6all my friends, but the lion still catches me. There are also rooms on transport, the environment and space technology,7maths, physics and chemistry.

    People can do a lot of things in this museum, but they have to obey some rules as well. For example, they mustn't take photos of the8in the museum. But they can buy postcards of them in the museum shops.9, the Science Museum is free. That means people can drop in for a few minutes or stay as long as they like一 it's open every day,from 10 am to 6 pm. So if someone ever goes to London,10of visiting the Science Museum. It's my favourite museum in the whole world.

一 Oh, it _______________ old books.

    One day, a baby snail (蜗牛) found that he had to carry a big and heavy shell at any time. He was confused (困惑的), so he went up to his mother and asked, "Why was I born with a shell that grew so hard and heavy?" His mother said, "Because we don't have bones to hold us up. We can only move slowly, so we need a shell to protect us."

    The baby snail asked again, "The caterpillar (毛毛虫) has no bones, and she can't move quickly. Why can she live without a shell?" The mother snail answered, "That's because a caterpillar will become a butterfly. She can fly high into the sky. The sky can protect her." The baby snail had one more question, "But the earthworm (蚯蚓) moves like us. He has no bones and he won't turn into a butterfly. Why doesn't he carry a hard and heavy shell?" His mother said, "He can dig a hole and hide in the ground, and then the earth can protect him.

    The baby snail then cried, "We are so poor! We have no protection from the sky or from the ground!" His mother smiled at him, "That's why we have a shell. My dear, imagine that if we don't have shells, what will happen to us? Hot sun will dry out our bodies and we'll have nowhere to sleep. What's worse, we'll die in the heavy rain. How terrible it is! We don't depend on the sky or the ground for protection. We should depend on ourselves.

My parents always .

Han Mei: Hi,Darning! I haven't seen you for a long time.

Daming: Hi, Han Mei! I have been to London.

Han Mei: It is so wonderful! What impressed you most?

Daming: The London Science Museum,of course. I have never seen so many interesting things before. For example, I went to Launchpad to do physics experiments, and I also went to Rocket Show to learn about travelling in space and so on.

Han Mei: It's great!

Daming: It's free and it's open every day.

Han Mei:

Daming: From 10 am to 6 pm. So if you go to London, you should visit the London Science Museum.

Han Mei: