孕妇血液中存在IgG血型抗体即有可能引起新生儿溶血病。
参考答案：对
Although we had told them not to keep us waiting, they made no _________ to speed up deliveries.
A．trial
B．attempt
C．action
D．progress
在假远期信用证业务中，银行贴现的利息由( )负担。
A．开证申请人
B．受益人
C．议付行
D．开证行
