呕血最常见的原因
A．消化性溃疡B．食管炎C．白血病D．尿毒症E．急性胃黏膜病变出血
参考答案：A
-----The film is, I have to say, not a bit interesting．
------Why? It’s ______________ than the films I have ever seen．
A．far more interesting
B．much less interesting
C．no more interesting
D．any less interesting
内存与磁盘之间交换信息的最小单位是
A．记录
B．数据项
C．块
D．文件
