下列选项中表示随机存储器的是______。
A．RAM
B．ROM
C．RAS
D．RDRAM
参考答案：A
My father is lovely and _______, but sometimes he is not _______ me.
A．energy; patient to
B．energetic; patient to
C．energy; patient with
D．energetic; patient with
99mTc的物理半衰期大约是（）
A.4小时
B.6小时
C.8小时
D.24小时
E.66小时
