最可靠的诊断方法为：A．血CA125测定 B．宫腔镜检查 C．腹部X线摄片 D．盆腔

The basic unit of measure in a computer system is the（ ）. It is the smallest unit in computing. There are some other measures in a computer, such as Kilobyte,Megabyte, Gigabyte and so on.

A．Kilobyte

B．Bit

C．Gigabyte

D．Megabyte

490里面有（    ）个70。

I feel ________ after a good sleep.    [ ]

A. relaxation      

B. relaxed

C. relaxes      

D. relaxs

汽车运输成本计算对象是（）。