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请你设计一节课的教案，达到以下目的： 1．学生能够通过组织乐队进行演唱来听说读写某些词汇。 2．培养学生运用英语的能力。

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Inside the computer, the operation system (of another software module called a data communication (71) )must decide which program will get control next. Each program remember, is associated (72) . a particular front -end port. If a program’s data have not yet reached its front - end buffer, there is no point giving that program control. Thus the data communication monitor sends its own (73) signal to the front -end devices next port is polled. Note that the (74) computer speed. The computer never has to wait for a terminal or a communication line. Instead, it is the expressive front - end processor that waits for the slower system (75) to respond. （71）处填（）。

A. memory
B. control
C. monitor
D. charge

患者右腮腺区恶性肿瘤，行局部扩大切除及胸大肌皮瓣修复，其术区未与口腔相通。创口未发生感染，其拆线应该在术后

A. 4天
B. 5天全部拆除
C. 5天间断拆线，至々天拆完
D. 8～10天拆除
E. 由于行组织瓣修复组织，拆线延长至14天

一颊部穿通伤患者，前来急诊。对此类创伤的处理原则是

A. 抗感染
B. 止血
C. 减少畸形，恢复面形
D. 关闭创口，消灭创面
E. 以上几点都对

腭中线裂开

A. 纵行骨折
B. 不对称骨折
C. LefortⅠ型骨折
D. LefortⅡ型骨折
E. LefortⅢ型骨折