35. Although he thought he was helping us to prepare the dinner， he was actually ____ the way.
A. in
B. off
C. by
D. on
36. Although most birds have only a negligible sense of smell， they have ____ vision.
A. vigorous
B. exact
C. acute
D. vivid
37. Although sports ____ the household， Joe drew the line when they interfered with family traditions and routine.
A. overwhelmed
B. affected
C. dominated
D. influenced
38. Although the town had been ____ by the storm several times， little damage was done.
A. attacked
B. injured
C. harmed
D. struck
39. America will never again have as a nation the spirit of adventure as it ____ before the West was settled.
A. could
B. was
C. would
D. did
40. Among the many subjects in school， mathematics is probably the most _____， depending least on a student's background and culture.
A. universal
B. abstract
C. arbitrary
D. concrete