When (study) different cultures and societies, anthropologists often (focus on) marriage as (a) contractual agreement between (different parties).()
A. study
B. focus on
C. a
D. different parties
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( Found )in the (shells of) lobsters, shrimp, and crabs, glucosamine (is also)_ present in human cartilage, which (covering )the bones in joints.()
A. Found
B. shells of
C. is also
D. covering
Lightning (tends to) strike the nearest (good conductor), and hence often strikes (in same) place more (than once).()
A. tends to
B. good conductor
C. in same
D. than once
In the nineteenth century, Montreal grew (into) an important (transportation) and industrial center, (aided) by its many natural resources and an (abundant of )hydroelectric power.()
A. into
B. transportation
C. aided
D. abundant of
The (conceptual) of (musical) harmony is (generally) traced to the ninth century because it is first (mentioned) in treatises of that period.()
A. conceptual
B. musical
C. generally
D. mentioned