所谓的线膨胀系数就是金属材料每升高1℃所（）长度与（）长度之比。
参考答案：增加；原来
The boys are still playing basketball happily on the court ______ it is raining heavily.
A．in case
B．even though
C．as if
D．as long as
某投资项目，计算期为6年，各年净现金流量如下表所示。该项目的行业基准收益率为10%，则其财务净现值为（）万元。
A.30.567
B.33.624
C.62.441
D.150.00
