（12分）已知A是气态烃，完全燃烧时产生的CO₂和H₂O的物质的量之比为1∶1，A的相对分子量小于30，在下图变化中，中间产物C跟葡萄糖一样也能跟新制的Cu(OH)₂发生反应产生砖红色沉淀，E有香味，（反应条件未写出）。

写出下列各步变化的化学方程式，并注明反应条件。

反应①                                        ；              

反应②                                        ；              

反应④                                       ；              

反应⑤                                       ；              

An analyst routinely has the opportunity to offer his clients the opportunity to purchase "hot new issues. " He tells his clients that he will distribute each issue equally among those interested, with himself included in the distribution. The clients do not object to this. With respect to Standard Ⅵ (B) , Priority of Transactions, this :（）

A. cannot be a violation because the clients know of the practice and agree.

B. may be a violation because it is impossible to distribute hot new issues equally.

C. may be a violation despite the clients’ approval.