问题
选择题
_____rapidly by the body, sugar provides a quick energy source.
A．Digested
B．Digesting
C．To digest
D．Having digested
答案
答案：A
考查非谓语动词。主语sugar与digest之间是被动关系，所以用过去分词选A。
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_____rapidly by the body, sugar provides a quick energy source.
A．Digested
B．Digesting
C．To digest
D．Having digested
答案：A
考查非谓语动词。主语sugar与digest之间是被动关系，所以用过去分词选A。