糖酵解途径的关键酶是
A．丙酮酸羧化酶
B．磷酸果糖激酶-1
C．果糖二磷酸酶
D．磷酸己糖异构酶
E．磷酸果糖激酶-2
参考答案：B
Hi, as I soon for Nicaragua to do some research, I would love to hear your suggestions.
A．am leaving
B．am left
C．was leaving
D．was left
一个圆的周长是9.42dm，这个圆的面积是______dm2．
