判断题 First ,they polluted the rivers and lakes .Then they spend billions trying to control the pollution .This doesn’t make sense .It is absolutely stupid.()

判断题 采用流通转让的票据有汇票、本票、支票、国库券、大额定期存单、不记名债券等。他们是不完全流通证券。()

判断题 开至国外供货人的信用证就是一般的背对背信用证。()