酮体生成和丙酮酸羧化支路共同的代谢场所是
A．生长素B．胰岛素C．肾上腺素D．甲状旁腺素E．糖皮质激素
参考答案：C
试说明探头扫査的原则？
The entrance examination is approaching.It's time we got down to________for it.[ ]
A. preparing
B. prepare
C. having prepared
D. be prepared
