8. We missed our train, and ___ the next train was delayed, ____ we had to wait for two hours.

A．on top of that; in that case

B．as a result; so that

C．because; therefore

D．what was worse; in which case

根据《建设工程工程量清单计价规范》（GB50500-2013），关于工程量清单编制的说法，正确的是（）。

A.同一招标工程的项目编码不能重复

B.措施项目都应该以“项”为计量单位

C.所有清单项目的工程量都应以实际施工的工程量为准

D.暂估价是用于施工中可能发生工程变更时的工程价款调整的费用