Step right up and prove why you should get a one-way ticket to Mars! Well, wait——you might want to know a little more about the venture first.A Dutch company called Mars One began looking Monday for volunteer astronauts to fly to Mars. Departure for the Red Planet is scheduled for 2022, landing seven months later in 2023.The space travelers will return...never. They will finish out their lives on Mars, representatives from the nonprofit said. “It’s likely that there will be a crematorium (火葬场), ” said CEO Bas Lansdorp. “It’s up to the people on Mars to decide what to do with their death.”Still, the company said it has received more than 10,000 e-mails from interested would-be spacefarers.The one-way ticket makes the mission possible because it greatly reduces costs, and the technology for a return flight doesn’t exist, according to Mars One’s website. At a news conference, Lansdorp maintained that “no new inventions are needed to land humans on Mars.”The biggest obstacles, he said, are financial. The company has revealed some of its sponsors and hopes to gain more via media coverage. It’s not clear whether enough money will be collected in time. There are also practical issues: Can the kinks in having a sustainable system for people to survive in such a harsh environment be worked out by 2023?“Questions of reliability and robustness have to be answered before we leave Earth,” said Grant Anderson of Paragon Space Development Corporation, which builds life-support systems and is joining the Mars One effort.1. Which of the following statements is NOT true according to the passage?2. The word “spacefarers” in Paragraph 4 is closest in meaning to（ ）.3. The most difficult part of the program is that（ ）.4. What are the practical issues of the program?5. The word “robustness” in the last paragraph is closest in meaning to（ ） .

A.Mars One is a company from Holland. B.The journey from the earth to Mars may last for seven months. C.The astronauts will live forever on Mars. D.This is a one-way journey from the earth to Mars.
问题2：
A.space travelers B.space builders C.space flyers D.space designers
问题3：
A.they haven’t discovered the way to land humans on Mars B.they haven't found the technology for the return flight C.the program costs too much D.they haven’t received much fund from their sponsors and other sources
问题4：
A.How to get enough money in time? B.How do people live on Mars sustainably? C.How to keep the environment sustainable? D.How to make the program reliable?
问题5：
A.health B.safely C.comfort D.sustainability