The key answer of exercise 1

a)

1. 3
2. 2
3. 1
4. 5
5. 4

b)

1. F → even sceptics have had to regard space tourism as an area with real commercial potential
2. T → a trip which included a week-long stay on the International Space Station
3. F → sub-orbital flights; Space tourists experience a few minutes of weightlessness and a view of the stars before heading back to earth and gliding in for a landing
4. NG → this isn’t mentioned as the writer's opinion anywhere
5. T → to develop space hotels that can offer more luxurious surroundings than the International Space Station, which was designed for research purposes, not for tourists
6. NG → we know the Space Island Group's hotel rotates, but we don’t know about the Galactic Suite space hotel
7. T → Space enthusiasts are optimistic ... and expect prices to keep coming down as competition gets more vicious
8. F → there's always the prospect, however unlikely, of getting a job in one of the space hotels

c)

1. the stuff of
2. sceptics
3. got on the case
4. sub-orbital
5. come up with
6. targeting
7. the going price
8. vicious