单项选择题

The strong, light-weight bamboo makes an excellent reinforcement for concrete.

A．replacement
B．enforcement
C．substitute
D．strengthening
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单项选择题
This growth in the______of diabetes is due, in part, to an increase in obesity.
A．inference
B．incidence
C．regulation
D．repetition
单项选择题
Beachy s findings, according to Martin,______.
A．can be applied to human biology
B．may throw light on the connections between human beings and other species
C．are limited to fruit flies and mice
D．can explain the mother"s inability to make cholesterol
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