If laid out instraight line,human digestive tract would measure appr

游客2025-02-01 28

问题 If laid out in______straight line,______human digestive tract would measure approximately thirty-foot long.

选项 A、a...the
B、/...the
C、the.../
D、the...a

答案 A

解析

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If laid out in______straight line,______human digestive tract would measure appr