正常人腹部基本叩诊音呈（） A.清音 B.鼓音 C.浊音 D.实音 E.过清音

A successful businessman was invited to a TV

小题1: . Everybody couldn’t wait to hear a success story from him. He, however, only said  小题2:, “Won’t it be better for me to ask you for help on a certain problem？”

Here was his problem. “ People all rushed to the place where a gold mine(矿) had just been   小题3: , but there was a deep river stopping them. They must cross the river if they wanted to get to the gold mine. What would you do if you were among them? Please give me some 小题4: .”

苹果酸钠盐（C₄H₅O₅Na）是低钠盐的一种，适合患有高血压、肾病、心脏病的患者，请回答：

（1）苹果酸钠盐的相对分子质量是______；

（2）其中碳、氢、氧、钠四种元素的质量比为______．

“乙癸同源”的“乙癸”所指的脏是（）

A．心脾

B．肝肺

C．脾肾

D．心肾

E．肝肾

无效合同从( )之日起无法律效力。

A．被发现无效

B．合同订立

C．人民法院确认无效

D．仲裁机构确认无效

行为的成立以另一种行为的存在作为存在前提的法律行为，称为（）

A.积极性为

B.从行为

C.多方行为

D.要式行为