伤寒最严重的并发症
A．肠出血
B．肠穿孔
C．中毒性心肌炎
D．血栓性静脉炎
E．肺炎
参考答案：B
My sister met him at the Grand Theatre yesterdays afternoon, so he ________ your lecture.[ ]
A．couldn't have attended
B．needn't have attended
C．mustn't have attended
D．shouldn't have attended
小王想把一张照片进行加工做成大头贴她需要用到下面哪个软件（）。
A、Word
B、Flash
C、Excel
D、Photoshop
