下列物质水解后所释放出的能量可直接用于肌肉收缩的是[ ]
A．肝糖原
B．肌糖原
C．葡萄糖
D．三磷酸腺苷
答案：D
—Yuan Longping, one of the greatest scientists in China, ______ as "father of hybrid rice".
—We are proud of him. [ ]
A. is regarded
B. has regarded
C. is regarding
D. regards
某计算机字长32位，其存储容量为4MB，若按半字编址，它的寻址范围是（）。
A.0─4MB
B.0─2MB
C.0─2M
D.0─1M
