501 Critical Reading Questions

a.
tactful
b.
distinct
c.
careful
d.
prudent
e.
judicious
383.
Which of the following titles is most appropriate for this passage?
a.
Ivory: An Endangered Species
b.
Elephants, Ivory, and Widespread Hunting in Africa
c.
Ivory: Is It Organic or Inorganic?
d.
Uncovering the Aspects of Natural Ivory
e.
Scrimshaw: A Study of the Art of Ivory Carving
384.
The word 
scrimshawed
in line 12 and line 52 most nearly means
a.
floated.
b.
waxed.
c.
carved.
d.
sunk.
e.
buoyed.
385.
Which of the following choices is NOT part of the physical
structure of teeth?
a.
pulp cavity
b.
dentine
c.
cementum
d.
tusk
e.
enamel
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501
Critical Reading Questions
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386.
As used in line 13, what is the best synonym for 
mastication
?
a.
digestion
b.
tasting
c.
biting
d.
chewing
e.
preparation
387.
Which sentence best describes 
dentinal tubules
?
a.
Dentinal tubules are a layer surrounding the dentine of tooth
and tusk roots.
b.
Dentinal tubules are micro-canals that radiate outward through
the dentine from the pulp cavity to the exterior cementum border.
c.
Dentinal tubules are responsible for the formation of enamel
and are lost after the enamel process is complete.
d.
Dentinal tubules cover the surface of the tooth or tusk which
receives the most wear, such as the tip or crown.
e.
Dentinal tubules are extremely large teeth projecting beyond
the lips that have evolved from teeth and give certain species an
evolutionary advantage.
388.
According to the passage, all of the following are organic
substances EXCEPT