有学者认为：“中国凭借着在丝绸、瓷器等方面无与匹敌的制造业和出口，与任何国家进行

Many people in Haiti died from the earthquake because they didn’t have       to immediate rescue.

A．access

B．admission

C．approach

D．attention

患者，女，15岁，因左侧面下部肿胀1周入院，临床检查见左侧下颌第1前磨牙缺失，余未见异常，X线影像示左侧下颌骨内有类圆形的透射区，约2cm×2cm大小，边缘光滑锐利，有白色骨质反应线环绕，边缘无切迹，透射区内有一牙冠，最可能的诊断是（）

A.含牙囊肿

B.残余囊肿

C.牙源性角化囊肿

D.创伤性颌骨囊肿

E.成釉细胞瘤

血型多聚糖前体的终端为（）。

A.半乳糖

B.L-岩藻糖

C.N-乙酰半乳糖胺

D.N-乙酰葡萄糖胺

E.乳糖

心电图的概念正确的是（）。

A.利用心电图机记录心室活动形成的曲线

B.心电图机不能从体表获得心动周期电活动变化的曲线图形

C.利用心电图机从体表记录心脏每一心动周期所产生电活动变化的曲线

D.利用心电图机记录心脏每搏输出量

E.利用心电图机从体表记录心脏每秒所产生电活动变化的曲线

System analysis is traditionally done top-down using structured analysis based on (90) ．Object-oriented analysis focuses on creation of models．The three types of the analysis model are (91) ．There are two substages of object-oriented analysis． (92) focuses on real-world things whose semantics the application captures．The object constructed in the requirement analysis shows the (93) of the real-world system and organizes it into workable pieces． (94) addresses the computer aspects ofthe application that are visible to users．The objects are those which can be expected to vary from time to time quite rapidly．

A．Static analysis
B．Semantic analysis
C．Scope analysis
D．Domain analysis