________________[A] puzzled by [B] hostile to [C] pessimistic about [D] unprepared f

The passage shows that the author is ______ the present situation.A．critical ofB．puzzled b

The expression "scratch the surface" most probably means ______.A．think hard in a puzzled

Can you figure ______ this puzzle？A、outB、inC、onD、for

__________[A] outside [B] on [C] by [D] across

___________[A] with [B] about [C] among [D] by

_________(63)A.by mistake B.by accidentC.in turn