输血后非溶血性发热反应多发生在输血后 ( )
A．30分钟B．1～2小时C．2～3小时D．3～4小时E．5小时
参考答案：B
You can't imagine _____ when they heard the good news.[ ]
A. how excited they were
B. how they were exited
C. how excited were they
D. they were how excited
《老人与海》表达的最直接的主题是（）
