Both Tito and Shuttleworth bought their tickets from a company called Space Adventures．The company has around 100 people already on their waiting list for flights into space．The spaceship to take them doesnt exist yet．

　　Many of the customdrs are people who like adventure．They are the kind of people who also want to climb Mount Qomolangma．Other customers are people who love space．However，these people are worried．Because its so expensive,only very rich people can go into space．They want space travel to be available to more people．

　 　That day may soon be here．Inter Orbital Systems(IOS)plans to send up to four tourists a week into space．The tours will depart from an island in Tonga．The company promises a package that includes forty-five days of astronaut training in Russia and California，seven days in space，and a vacation in Tonga．for $2 million．

　　However，space flight is still very dangerous．Bill Readdy is NASAs deputy assistant administrator for space flight．He says that the chances of dying are about 1 in 500．Because of this it may take time before space tourism really takes off．You might be able to go up，but will you come down?

　　16．Dennis Tito was the first tourist in space．

　　A．Right

　　B．Wrong

　　C．Not mentioned

　　17．Mark Shuttleworth is an engineer from the United States．

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