A.second
B.Thursday
C.president
D.hesitate

A. Please wait here
B. Show
C. Here it is
D. your license
E. beg your pardon
F. May I see
G. I’m sorry
H. Be careful

A．no other country can make one like it
B．it is much cheaper to operate
C．it is more sophisticated than Landsat 7
D．Terra will show energy gains