题目内容

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

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