磷酸果糖激酶-1PFK-1的别构抑制剂是()
A.AMP
B.ADP
C.ATP
D.GDP
E.GTP
参考答案:C
Seventy percent of the students _____ taken part in the work and seventy percent of the work _____
been finished. [ ]
A. has, has
B. had , had
C. has, have
D. have, has
生态学模式认为个体因素对人的行为没有影响。()