单项选择题

Vitamins necessary in small amounts in the diet for the normal growth and maintenance of are needed for______ foods into energy and body maintenance.

A．shifting
B．transferring
C．altering
D．transforming
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单项选择题
Banking and financial systems are full of ______and corruption hinder the region's successes.
A．bribery
B．management
C．administration
D．mismanagement
单项选择题
Larry does not have to worry about his newly-bought car, because he has______ it against accident, theft and fire.
A．assured
B．secured
C．ensured
D．insured
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