在“先生隐于洄溪,矮屋百椽”中,“椽”之义为()
A.栋
B.柱
C.屋顶支撑瓦片的木头
D.房屋间数
参考答案:C
It was the third time that she ______ to this mountain village to see the children.
A.had come
B.has come
C.came
D.would come
下列物质在体内氧化成Ach和H0时生成ATP最多的是()
A.甘油
B.丙酮酸
C.谷氨酸
D.乳酸
E.乙酰乙酸