公共关系的四要素是（）、公众、管理、方法。

(2014·江苏省三校4月阶段性考试)To their disappointment，Dr Wang gave a speech about the economy without even a passing________to the problem of unemployment.

A．connection

B．appointment

C．reference　

D．exploration

如图，小物体m与圆盘保持相对静止，随盘一起做匀速圆周运动，则有关物体的受力情况的说法，哪一个是正确的（　　）

A．物体受重力、支持力、摩擦力和向心力

B．物体受重力、压力、支持力和摩擦力

C．物体受重力、支持力和向心力

D．物体受重力、支持力和摩擦力

阅读下列材料：

材料一：江南制造总局炮厂的机器房	材料二

请回答：（1）材料一中的工业企业创办于什么运动时期，同时期该运动的口号是什么？创办这些企业的直接目的

    是什么？                                                                                                                                                                                                                                                                                                                              （2）列举李鸿章在上述运动中创办的两个重要的近代企业。根据所学知识判断材料二中李鸿章为什么会    有这样的感慨？                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              （3）上述运动的性质是什么，你是怎样认识这一重要运动的？

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                               

胃癌，癌组织浸润限于黏膜或黏膜下层（）

A．交界性肿瘤

B．早期癌

C．良性肿瘤

D．恶性肿瘤

E．癌前病变

一小儿因一侧眼有黄光反射，做眼眶CT平扫：一侧眼环内后极部见软组织团块，伴有较大不规则钙化，相邻视神经明显增厚。首先考虑为（）

A.视网膜血管瘤

B.视网膜母细胞瘤

C.脉络膜骨瘤

D.黑色素瘤

E.视网膜星形细胞瘤