It's______much more than I paid for it.
A.worth
B.worth of
C.worthing
D.worthy
参考答案:A
53.(单项选择题)
A.turns
B.means
C.says
D.costs
只用肝糖原的贮存量来维持血糖浓度最多不超过()
A.10小时
B.12小时
C.14小时
D.16小时
E.18小时