________(73)
A.circumstances
B.surrounding
C.background
D.setting

________(75)
A.cope
B.stand
C.support
D.manage

________(76)
A.made
B.kept
C.brought
D.had

________(77)
A.bothered
B.shocked
C.interfered
D.disturbed

________(78)
A.demonstrated
B.presented
C.pointed
D.displayed

The word "enables' in line 18 is closest in meaning to
A.specifics
B.allows
C.expands
D.constitutes

The word "it" in line 6 refers to
A.human perception
B.light
C.a type of microscope
D.the natural world

What does the passage mainly discuss?
A.Sources of illumination for microscopes
B.The detail seen through a microscope
C.Outdated microscopic technique
D.A new kind of microscope

The word "minuscule" in line 4 is closest in meaning to
A.complex
B.tiny
C.circular
D.dangerous

The word "Rather" in line 23 is closest in meaning to
A.somewhat
B.instead
C.significantly
D.preferably