《合同法》规定，合同内容一般包括( )等条款。A．标的 B．数量、质量 C．价款或

Students go to colleges and universities to have valuable experiences and learn to live in their own. Go to college often means having the opportunity to meet with different peoples from different parts of the country. They learn to communicating and co-operate with each other. For most students, we guess, it is the first time that they had been away home. They are faced by many new situations and have to learn to solve them independently, making decisions on our own and dealing with various things themselves. So colleges and universities help with them grow up.

下列语句不适合本文标题的一项是( )。

A．探索宇宙深处的未知讯号

B．地球外的智慧生命在哪里

C．来自地球外文明的讯号

D．是外星人发出的电波吗

（10分）(1) 按系统命名法命名

①有机物CH₃CH(C₂H₅)CH(CH₃)₂的名称是________________________。

②在有机物分子中若某一个碳原子连接4个不同的原子或基团，则这种碳原子称为“手性碳原子”。C₇H₁₆的同分异构体中具有“手性碳原子”的有两种，名称分别为________________                ___________  ____ 。

(2) 写出下列各有机物的结构简式

① 2，3－二甲基－4－乙基已烷 _____________________________________

②支链只有一个乙基且式量最小的烷烃_____________________________

会计核算职能的一般特征是()。

A、具有客观性

B、具体体现在记账、算账、报账三个阶段上

C、以货币为主要计量单位

D、具有连续性、系统性、全面性

E、包括事前反映、事中反映和事后反映

鸡胸和漏斗胸多见于（）

A.生后1～2个月

B.生后3～4个月

C.生后6～10个月

D.1岁左右

E.3岁以后