1.   The scientists believe that there might be some planets to ……………… human life.

            A. provide                 B. accommodate       C. replace                  D. support

      2.   Mercury ……………… after the Roman God Mercury.

            A. named                   B. called                     C. is named                D. is called

      3.   The prerequisite condition for a ……………… planet is water supplies, appropriate temperatures and breathable air.

            A. habitable               B. inhabitable           C. habitant                 D. inhabitant

      4.   ……………… I have a look at the photos of outer space in your computer?

            A. Might                     B. Could                     C. Shall                      D. May

      5.   Mercury is very close to the sun, and it is very hot. Therefore, there ……………… not be life on it.

            A. might                     B. could                     C. can                         D. will

      6.   My friend asked me ……………… I had ever seen any unidentified flying object.

            A. if                            B. whether                 C. where                     D. both A& B       

      7.   She wondered ……………… a space buggy looked like.

            A. what                       B. how                        C. which                     D. what things

      8.   I am not sure ………... food tablets might supply enough energy for astronauts or not.

            A. what                       B. why                        C. how                        D. if

      9.   The teacher asked us what the essential conditions for human life ………………

            A. is                            B. are                          C. was                         D. were

      10. The little boys wondered if he would meet an alien in his dream ………………    

            A. tonight                   B. this night               C. that night               D. that day’s night