2.关于慢性溃疡性结肠炎的叙述,下列哪项是正确的?
A. 初期病变肠黏膜隐窝小脓肿形成
B. 溃疡周边肠黏膜上皮增生,形成腺瘤性息肉
C. 溃疡底部有肉芽组织形成,并有增生性动脉内膜炎
D. 溃疡为表浅性、不向肠壁深层扩展
E. 溃疡呈椭圆形,其长轴与肠管平行
In this unit,you may meet some particular terms commonly used in the topic of flexible working. Check the following words & expressions, and see whether you know their meanings. Use a dictionary to help you if necessary.
以下哪个不是AJax的技术基础?
A. JAVA
B. XML
CSS
D. XMLHttp
iframe是HTML中的一个标签?
A. 对
B. 错