Since 2003, China has sent 18 astronauts into space to “reach for the stars”. Have you ever dreamed of becoming an astronaut? How did these astronauts get there?

●Health is important

To be an astronaut, you need to be very healthy. Good eyesight and a strong heart are important. You’d better not have other small problems. For example, bad teeth problem could get _____ in space and bring trouble to astronauts.

●Become stronger with _____

You must be a great pilot before you can be an astronaut. You must fly more than 600 hours without _____ and then you may be chosen as a backup astronaut and start training. It’s very difficult. You need to make yourself very strong by running, swimming and doing pull-ups. You will also wear a 200-kilogram suit and do tasks under water for six or seven hours. This is like doing tasks during a spacewalk.

●Learn science

Knowledge is important. Astronauts need to take 60 courses to _____ spacewalk, including math, spacecraft design and many more. So they will know what to do _____ something terrible happens. They can also do scientific experiments (实验) in space.

Even if you are great enough to become an astronaut, it’s _____ that you will never go to space. There are many unsung (无名的) heroes of the space program.

Cody’s family moved to a new house. Cody liked his new town, but he still missed his grandparents. Cody’s birthday came, and dad wanted to hold a band (乐队).

On that day, Cody woke up early and started to get ready for his party. He started to check his l    47     of things to do. But then he saw something terrible. There was snow on the ground and lots of it! “Dad!” he said. “How can the band play their instruments (乐器) outside?”

Dad said, “We’ll move the stage i    48    .” They carried everything into the house. When they finished, they got a call from the band. They did not want to come in the storm. Dad said, “Let’s get someone to perform magic.” But no one would come because of the storm.

F    49    , Dad said, “I’m sorry, Cody. We can’t have the party today.” Cody felt disappointed.

But then something got his attention. He n    50     a car in front of their house. His grandparents owned a car like that!

Cody was right. His grandparents came for his birthday! “Happy birthday, Cody! We’re sorry we are late. There was so much snow. We tried to leave a m    51     to tell you.”

Cody told them what happened. “I was sad,” he said. “But I’m not any more. I’m so happy to see you.” Dad brought out something s    52     for Cody’s birthday. It was his favourite toy car. Then Cody told his grandparents about the new town. It was his best birthday ever.

59. Write at least 50 words on the topic “An unforgettable school activity”. （请以“一次难忘的校园活动”为题，写一篇不少于50个词的短文，标点符号不占格。）