化学沉淀物质

如果Crohn病患者出现持续性腹痛和明显腹部压痛，不应首先考虑（）。

A.炎症加重有窦道

B.回肠末端肠穿孔

C.炎症波及腹膜或腹腔内脓肿形成

D.不完全肠梗阻

E.肠痉挛

喉不具有的生理功能是：（）

A.呼吸功能

B.发声功能

C.声音共鸣功能

D.保护下呼吸道功能

E.屏气功能

Part 1: Self-introduction

·The interlocutor will ask you and your partner questions about yourselves. You may be asked about things like "your hometown ", "your interests ", "your career plans ", etc.

Part 2: Presentation

·The interlocutor gives you two photographs and asks .you to talk about them for about one minute. The examiner then asks your parmer a question about your photographs and your partner responds briefly. Then the interlocutor gives your partner two photographs. Your partner talks about these pictures for about one minute. This time the interlocutor asks you a question about your partner’s photographs and you respond briefly.

Part 3: Collaboration

·The interlocutor gives you and your partner a list of topics. Both of you need to choose one to discuss together. The interlocutor may join in the conversation and ask you questions, but you and your partner are expected to develop the conversation.

Topic 1:

The Best Means of Communication

Topic 2:

Women’s Shopping Addiction

Topic 3:

The Joy of Travel

Topic 4:

Changing Jobs

Topic 5:

The Power of Press

Topic 6:

What Makes TV Most Entertaining

精癃多发于何年龄

A．婴儿
B．儿童
C．青年人
D．中年人
E．老年人

系统管理层次中，充分采用各类安全技术和防护手段综合构成的属于( )层次。

A．系统管理

B．业务应用

C．应用支撑

D．安全系统