A.look up
B.look down
C.look away
D.look back
A.striving
B.experiencing
C.struggling
D.confronting
Which of the following reasons is not the cause of American sustained pessimism?
A.Loss of dominance in foreign affairs.
B.Economic recession.
C.Domestic political conflict.
D.Long—term effect of 9/11.
Which of the following is not the“outside activities”in the eyes of scientists?
A.Writing scientific columns for the broader media.
B.Churning out books for commercial press.
C.Serving as an advisor in government panel.
D.Travelling to takc part in aft scientific seminar.
A.That
B.What
C.As
D.Whatever
A.as
B.below
C.beyond
D.above