-- Is Sally in the classroom?
-- No. There _____ nobody in it.[ ]
A. is
B. are
C. has
答案:A
在糖酵解和糖异生中都起作用的酶是()
A.丙酮酸激酶
B.丙酮酸羧化酶
C.3-磷酸甘油醛脱氢酶
D.己糖激酶
E.磷酸果糖激酶
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