B

　　Eager to open up a space tourism market, a Russian company presented a "space place" model. It would give tourists the chance to spend an hour in space.

　　Anybody who can pay about $100,000 would be able to experience zero gravity. About 100 people have already booked seats to fly on the C-21 plane. The US company helped the first space tourist, Dennis Tito, to secure his flight to the International Space Station. Tito is said to have paid $20 million for the eight-day trip. C-21 would offer tourists a small glimpse of space. The aircraft, carrying a pilot and two passengers, will be positioned on top of a carrier airplane until it is 17,100 metres in the air. Once released from the carrier, the ship's own rocket will send it to a height of over 96 kilometers for three minutes of weightlessness. Then C-21 will slide back into the atmosphere and land like an ordinary plane. The entire flight will only take about an hour.(from www.zkenglish.com)

　　仔细阅读短文，补上每个句子中所缺的词，使句意完整，语句连贯。

　　6. A ________ company would give tourists the ________ to spend an hour in space.

　　7. About 100 people are ________ to spend $100,000 for ________ on the C-21 plane.

　　8. Dennis Tito is the first ________ ________. He have paid $20 million for the eight-day trip in space.

　　9. A ________ and two ________ will be positioned on top of a carrier airplane.

　　10. C-21 will ________ back into the atmosphere and ________ like an ordinary plane.