—Is there any hope of saving his life?

—His injuries are extremely serious, but he’s expected to ____.

A．pull in

B．pull through

C．pull up

D．pull over

根据我国统一会计制度的要求，（ ）单位在进行会计核算时，都必须统一采用借贷记账法。

A．企业

B．事业

C．行政

D．以上都对