30岁男性,以急性。阑尾炎住院。早期腹痛位于脐周,伴恶心、呕吐。其腹痛发生机制是( )
A.牵涉痛B.反射性腹痛C.躯体性腹痛D.中枢性腹痛E.内脏性腹痛
参考答案:E
The word "breakthrough" is often used when talking about the newest drug or the next treatment ___ in cancer research.
A.finding
B.being found
C.to be found
D.found
比排放量是指()质量。