属于信托绝对无效情形的有( )。 A．信托资产不能确定 B．委托人设立信托损害其债

What _____________ the monkeys doing? [ ]

A. do

B. is

C. are

（15分）有机物A为芳香烃，质谱分析表明其相对分子质量为92，某课题小组以A为起始原料可以合成酯类香料H和高分子化合物I，其相关反应如下图所示：                                                       

已知以下信息：

①碳烯（:CH₂）又称卡宾，它十分活跃，很容易用它的两个未成对电子插在烷烃分子的C-H键之间使碳链增长。

②通常在同一个碳原子连有两个羟基不稳定，易脱水形成羰基。

回答下列问题：

（1）A的化学名称为         。

（2）由B生成C的化学方程式为                ，该反应类型为          。                                                              （3）G的结构简式为           。

（4）请写出由F生成I的化学方程式                                             。

（5）写出G到H的反应方程式                                       。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

（6）H的所有同分异构体中，满足下列条件的共有        种；

①含有苯环        ②苯环上只有一个取代基          ③属于酯类

其中核磁共振氢谱有五种不同化学环境的氢，且峰面积比为1:1:2:2:6的是           （写结构简式）。

按填制方法的不同，记账凭证可分为（）。

A.收款凭证、付款凭证和转账凭证

B.专用记账凭证和通用记账凭证

C.复式记账凭证和单式记账凭证

D.原始凭证和记账凭证

（一）请从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性。

（）

A．A

B．B

C．C

D．D

（）原则为国有土地使用权交易的一般规则。

A.法定程序

B.房地一致

C.物权法定

D.一物一权