Space is not empty! Every week, more and more satellites are sent into space to orbit the Earth. A satellite usually works for about 10-12 years. Satellites which are broken are sometimes repaired by astronauts or sometimes brought back to Earth to be repaired. Often, very old or broken satellites are left in space to orbit the Earth for a very long time. This is very serious because some satellites use nuclear power and they can crash into each other.

5. Which of the following is NOT done by satellites according to the passage?

　A. Sending information for weather forecast.

　B. Taking photographs of the Earth.

　C. Sending TV pictures.

　D. Providing food for airplane pilots.

6. What's the speed the earth rotates at?

　A. 35, 880 kilometres per hour.

　B. 335, 880 kilometres per hour.

　C. 11, 000 kilometres per hour.

　D. 110, 000 kilometres per hour.

7. What does the underlined word "This" in the 3rd paragraph refer to?

　A. A satellite.

　B. A little rocket.

　C. A satellite seems to stay in the same place in the sky.

　D. The satellite puts the rockets in the right position.

8. Which is true of satellites?

　A. A satellite usually works for about 10-12 years.

　B. Every time a satellite gets broken, it is brought back to the Earth to be repaired.

　C. A broken satellite is never left in space.

　D. They often crash into each other.

　　It was the first time that Benny had travelled on his own. As he stood with his luggage at the check－in for the flight to Singapore, he felt very nervous.

　　"You'll be fine," said his dad. "Nothing ever happens on flights nowadays!"

　　Soon it was time to board the aircraft. Benny quickly found his seat and settled down next to an old lady. They started chatting and the lady told him that her name was Mrs Pang, and that she was on her way to London to visit her son.

As the aircraft rushed down the runway, Benny could see that Mrs Pang was holding