社会
参考答案：
指生活在一个共同的地域中、说同一种语言、有共同的风俗习惯和文体传统的人类共同体，即一般所说的部落、部族和民族。
根据句意及中文提示完成句子。（5分）
小题1:I forgot those ___________ (绅士) names, but I was still grateful to them.
小题2:Luckily, we had a lot of support from local ___________(企业)
小题3:My father is busy on weekdays, ___________(特别) on Monday.
小题4:At last, the two thieves were __________(控制) by the police.
小题5:He has done much__________(调查) on teenage problems.
某宗土地取得成本为1000万元，开发成本为1500万元，管理费用为75万元，销售费用为35万元，投资利润率为12%，则开发利润为()万元。
A.180.0
B.300.0
C.309.0
D.313.2
