5页.1.C2.D
1.(1)Speaking
(2)western
(3)climbed
(4)prize
(5)sold
2.(1)flown
(2)whataboutyou
(3)hasyet
6页(4)whattodo
3.B.C.A.B.C.A.D.A
7页.1.(1)several
(2)send
(3)astronauts
(4)scientist
(5)watchinginteresting
2.(1)yet
(2)evernever
(3)already
(4)just
3.(1)HasthespacecrafthasreachedMarsyet
(2)DaminghasnotreadanybooksaboutMarsyet
(3)HavepeoplesentastronautstothemoonrecentlyNo,theyhavenot.