题目

有氧呼吸过程中，氧的作用是  A．直接氧化体内有机物                 B．在酶的催化下使水分解  C．与反应物中产生的氢结合形成水       D．与有机物中的碳结合形成水 答案：C  So hard did he work that he __________made himself ill for a whole week.                                                                                                                                                          [    ] A. merelyB. annually C. eventuallyD. fortunately