IV. Read the text and choose the correct answer A, B, C or D to each question. Scientists have discovered a new planet , Hero. They are very confident that human beings will be able to live there, as it has water, light, oxygen and the temperature and air are similar to those on Earth. They are done tests and known that plants can grow there. They have not seen any alien life there, but they cannot be sure that it doesn't exist. They have decided to send a spaceship of people there form Earth, to start a space colony, and a new human society. But there is space for only six people. These people will have to stay there for the rest of their lives . No one else will be able to join the space colony for at least a hundred years. They will take enough food tablets for five years, together with four guns to protect themselves, and blankets, space-tents , etC. The spaceship will be controlled from Earth so there will not be a pilot. The journey will last about ten weeks. The organizers have asked for volunteers, but fortunately only ten people have volunteered . The spaceship must leave in two days'time so there is no time to find new volunteers. 26. Scientists cannot be sure that __ doesn't exist. A. water B. alien life C. plants D. oxygen 27. How many people are ready for the journey to Hero? A. ten new volunteers B. more than ten volunteers C. 10 volunteers D. many people 28. It is estimated that the trip to the planet will take __ A. more than ten weeks B. around ten weeks C. as long as five years D. as long as ten weeks 29. The word "alien" in this passage is the closet meaning to __ A. planet B. plant C. animal D. strange 30. Which of the following is correct? A. Scientists have found water, light and oxygen. B. Scientists have discovered a new hero. C. Scientists have discovered human beings. D. A new planet has been discovered.