21.rA]rather than[B]rather than of[C]rather…than of[D]not of
22.[A]of these[B]of that[C]of a person [D]of those
23.[A]in his mme [B]to his name[C]under the name of[D]in their name 24.[A]nation[B]country[C]nationality[D]national
25.[A]in [B]of[C]under[D]with
26.[A]accepted[B]accepting[C]accepting as[D]accepted as 27.[A]charges[B]transforms[C]tums[D]transfers
28.[A]is[B]has long been[C]are[D]have long been
29.[A]donation[B]giving[C]sending[D]contribution
30.[A]that[B]what[C]which[D]in which
31.[A]amounts[B]numbers[C]amount[D]number
32.[A]few[B]some people[C]many people[D]many others
33.[A]may[B]can[C]must[D]are obliged to
34.[A]to him[B]to them[C]to her[D]to US
35.[A]improve[B]change[C]care[D]alleviate
36.[A]talk[B]persuade[C]say[D]convinced
37.[A]non-violent[B]violent[C]inviolent[D]noviolent
38.[A]proceeded[B]pioneered[C]processed[D]possessed
39.[A]variety[B]kinds[C]sorts[D]various
40.[A]the poor people[B]the black[C]Jesus[D]Christians
41.At first，NASA is__________private citizen’S space travel.
[A]for
[B]against
[C]indifferent to
[D]hesitant about
42.The time between American businessman Dennis Tito’s and a South African businessman Mark Shuttleworth’space travel is__________.
[A]one year
[B]two years
[C]three vears
[D]four years
43.NASA thinks space travellers must__________to do private space travel.
[A]observe safety measures carefully
[B]have a new desire to use space vehicles for civilian travel
[C]negotiate with Russia or NASA
[D]be as rich as Dennis Tito and Mark Shuttleworth
44.If a person really wants to go to the space station，he or she should spend——in total.
[A]$200000
[B]twelve million dollars
[C]twentv million dollars
[D]more than twenty million dollars
45.Those who want to travel in the space should__________.
[A]afford the expenses of the space trip
[B]pass the health check and physical training
[C]speak English
[D]all of the above