Vitamins do not provide energy, nor do the

问题单项选择题

Vitamins do not provide energy, nor do they construct or build any part of the body. They are needed for______foods into energy and body maintenance.

A．transforming

B．transferring

C．altering

D．shifting

答案

参考答案：A

解析：根据题意指“把一物变成另一物”。在四个选项中能表达这一意思的只有transform，而且它通常与into连用，如；A steam engine transforms heat into energy．蒸汽机把热变成能。其他三个选项transfer“转移；调动”，alter“改变，变更”，shift“转移，移动；转变”都不能表达这一意思。