酮体合成酶系存在于（）
A．胞液
B．线粒体基质
C．内质网
D．线粒体内膜
参考答案：B
He hurried in and then _____ me all that had happened. [ ]
A. tells
B. tell
C. telling
D. told
11 22 33 45 ( ) 71
A．53
B．55
C．57
D．59
