工程预结算的审查形式有（）．
A．专家审查
B．单独审查
C．联合会审
D．委托审查
参考答案：B, C, D
用若干辆载重量为8吨的汽车运一批货物，若每辆汽车只装5吨，则剩下10吨货物，若每辆车装满8吨，则最后一辆汽车不空也不满，请问有多少辆汽车？
—Got your driving license?
—No. I ________ too busy to have enough practice, so I didn't take the driving test last week.[ ]
A. will be
B. am
C. have been
D. had been
