需求相似理论又称作需求偏好相似说或收入贸易说，是由瑞典经济学家林德提出的，它用国家之间需求结构的相似性来解释工业制成品的贸易发展。
参考答案：对
广义的有价证券包括（）。
A.金融证券
B.商品证券
C.货币证券
D.资本证券
Several diseases are believed to ______ the lives of many children annually, malaria _______.
A．claim, included
B．kill, to be included
C．be claiming, is included
D．be killing, included
