在实务中，有许多汇总性财务数据可以用作确定财务报表层次重要性水平的基准，但一般不宜将

化学课外兴趣小组的同学利用图甲提供的四种试剂，探究图乙所示的相关实验（要求每种试剂只能使用一次）。

（1）若试管里是水，要证明CO₂能与水发生化学反应，应加入下列药品中的      ，（填序号，下同）反应的化学方程式是           。

（2）若试管里装入的是NaOH溶液，要证明CO₂与NaOH溶液已经发生了反应，可向反应后的溶液中加入下列药品中的 ，发生反应的化学方程为    。

Dear Mr. Watson,

CLAIM AL54323432–-STORM DAMAGE TO ROOF

I received a cheque for $623 dated 26 January in payment of my recent claim(索赔). However, I wish to tell you how upset I have been by the way your Claims Assessor, Mr. Michael Tan, handled this claim.

When Mr. Tan first called me, he specifically told me that he believed I had been overcharged, and he would expect to pay that price for work on a double garage, rather than a single garage like mine. Mr. Tan suggested that I neither use nor recommend this contractor again. He continued to tell me it was unlikely for me to receive full payment. Never during this conversation did he mention that the reason for not receiving full payment was because of the nature of my insurance policy.

Consequently, I wrote to Mr. Lance Ashe to complain about his pricing, stating that I was very upset thinking that he could have taken advantage by overcharging a 73-year-old woman. Mr. Ashe telephoned me immediately and explained his charges in detail. He later reported back to me that Mr. Tan explained that I would not receive full payment because of the type of policy I hold, which does not cover wear and tear. This was the first time this issue had been brought to my attention, so you can imagine my surprise.

When I received Mr. Tan’s letter of 2 February, this situation was explained. If this had been explained in the first place I would have accepted it and would not have questioned Mr. Ashe’s charges. Instead, by telling me initially that I had been overcharged for this work, he caused a great deal of upset, not only for me but also for Mr. Ashe.

I believed this claim was handled badly by Mr. Tan from the beginning. Therefore, a great deal of embarrassment has been caused over this issue.

I felt you should know how disappointed and upset I am. I trust you will look into this and ensure that such claims are handled more appropriately in the future.

Yours sincerely,

Mrs. Richard

小题1:The author writes this letter to ______.

A．inform the manager of a payment

B．complain about a mishandled case

C．demand an apology from Mr. Watson

D．require the manager to fire Mr. Tan小题2:The underlined words “the contractor” in Para.2 refer to ______.

A．Mr. Tan

B．Mrs. Richard

C．Mr. Ashe

D．Mr. Watson小题3:The author could not receive full payment because _______.

A．her policy doesn’t cover some of the items

B．the contractor overcharged her for the work

C．Mr. Watson doesn’t take the matter seriously

D．she spent too much money fixing her garage小题4:We can learn from the passage that Mr. Tan works in a/an _______.

A．welfare organization

B．nursing house

C．local affairs office

D．insurance company

营业税的纳税人购进货物所含的增值税，在任何情况下都不能扣减营业税，因为增值税和营业税是不同的税种。 ( )

下列何项检验对诊断自身免疫性溶血性贫血有重要价值（）

A.红细胞渗透脆性试验

B.异丙醇沉淀试验

C.Ham试验

D.Coombs试验

E.Rous试验

切割更换后哪些车身部件可以采用搭接的方式进行（）

A、地板

B、中柱外板

C、门槛外板

D、挡泥板