Chinese space lover Wang Yuan has been chosen as one of the volunteers（志愿者）for the Mars500 test project. ____ (1) ____ Another five volunteers are all space lovers. They are three Russians,an ItalyColombian and a Frenchman. They will feel what itˈs like to travel to Mars without leaving the earth. During the whole process (过程),they are locked up for one and a half years under the condition which is similar to the red planet. So the experiment is called Mars500.
___ (2) _____ Although the volunteers wonˈt leave the building,they will feel as if (好像) they are on a real trip to Mars. The most difficult thing is that they will be separated (隔离) from the people outside. ____ (3) ____That will be hard. When reporters asked what they would miss most during the 500-day special life,Charles from France said,“For me,it will be mainly my family,the sun and fresh air.”
The main task is to study “Man and Environment”．It will care about the astronautsˈ physical effects and the experience of staying there.____ (4) ____So they will have to make decisions by themselves and then report to the workers on the earth，and the workers will tell them whether they do the right thing or not.
Each astronaut is preparing for the great challenge. And people are looking forward to the result of the experiment.
阅读短文，把A～D四个句子填入文中空缺处，使短文内容完整、正确，然后完成第80小题。
(1) ________
A.Everyone will stay and work there alone.
B.For 18 months, they wonˈt see the sunset（日落）or sunrise.
C.The Mars500 test will be in a special building in Moscow .
D.He was very happy to be chosen and will accept the challenge.
(2) ________
A.Everyone will stay and work there alone.
B.For 18 months, they wonˈt see the sunset（日落）or sunrise.
C.The Mars500 test will be in a special building in Moscow .
D.He was very happy to be chosen and will accept the challenge.
(3) ________
A.Everyone will stay and work there alone.
B.For 18 months, they wonˈt see the sunset（日落）or sunrise.
C.The Mars500 test will be in a special building in Moscow .
D.He was very happy to be chosen and will accept the challenge.
(4) ________
A.Everyone will stay and work there alone.
B.For 18 months, they wonˈt see the sunset（日落）or sunrise.
C.The Mars500 test will be in a special building in Moscow .
D.He was very happy to be chosen and will accept the challenge.
(5) According to the passage, which of the following is TRUE?
A. Five space lovers are chosen as volunteers.
B. The Mars500 test will take place in Paris.
C. The volunteers will face many sorts of difficulties.
D. The Mars500 test is about a real trip to Mars.