肝内胆道结石的主要症状为A．肝肿大有触痛 B．发热 C．明显黄疸 D．患侧肝区持续性

黄芩的主治证是（）

A.痈肿疮毒

B.血热吐衄

C.肺热咳嗽

D.胎动不安

E.湿温证

铜器与（）不宜长久接触，否则会产生铜绿。用生有铜绿的铜器盛放食品或烹炒菜肴易中毒。

A、酱油 

B、花椒面 

C、味精 

D、醋

（15分）硫代硫酸钠（Na₂S₂O₃）可由亚硫酸钠和硫粉通过化合反应制得，装置如图9。

已知：Na₂S₂O₃在酸性溶液中不能稳定存在，有关物质的溶解度曲线如图10所示。

（1）Na₂S₂O₃·5H₂O的制备：

步骤1：打开K₁、关闭K₂，向圆底烧瓶中加入足量浓硫酸并加热。写出烧瓶内发生反应的化学方程式：   。

步骤2：C中混合液被气流搅动，反应一段时间后，硫粉的量逐渐减少。当C中溶液的pH     时，打开K₂、关闭K₁并停止加热，理由是   。装置B、D的作用是   。

步骤3：过滤C中的混合液，将滤液经过   、   、过滤、洗涤、烘干，得到产品。

（2）Na₂S₂O₃性质的检验：

向新制氯水中加入Na₂S₂O₃溶液，氯水颜色变浅，再向溶液中滴加硝酸银溶液，观察到有白色沉淀产生，据此认为Na₂S₂O₃具有还原性。该方案是否正确并说明理由   。

（3）常用Na₂S₂O₃溶液测定废水中Ba²⁺浓度，步骤如下：取废水25.00 mL，控制适当的酸度加入足量K₂Cr₂O₇溶液，得BaCrO₄沉淀；过滤、洗涤后，用适量稀盐酸溶解，此时CrO₄^2－全部转化为Cr₂O₇^2－；再加过量KI溶液，充分反应后，加入淀粉溶液作指示剂，用0.010 mol·L^－1的Na₂S₂O₃溶液进行滴定，反应完全时，消耗Na₂S₂O₃溶液18.00 mL。部分反应的离子方程式为①Cr₂O₇^2－+ 6I^－+ 14H⁺  2Cr³⁺+3I₂+7H₂O；②I₂+ 2S₂O₃^2－ 2I^－+ S₄O₆^2－。

则该废水中Ba²⁺的物质的量浓度为   。

三公九卿

When Dave was eighteen, he bought a secondhand car for 200 so that he could travel to and from work more (1) than by bus. It worked quite well for a few years, but then it got so old, and it was costing him (2) much in repairs that he decided that he had better (3) it.

He asked among his friends to see if anyone was particularly (4) to buy a cheap car, but they all knew that it was falling to pieces, so (5) of them had any desire to buy it. Dave’s friend Sam saw that he was (6) when they met one evening, and said, "What’s (7) , Dave"

Dave told him, and Sam answered, "Well, what about advertising it in the paper You may (8) more for it that way than the cost of the advertisement!" Thinking that Sam’s (9) was sensible, he put an advertisement in an evening paper, which read "For sale: small car, (10) very little petrol, only two owners. Bargain at 50. " For two days after the advertisement first appeared, there was no (11) . But then on Saturday evening he had an enquiry. A man rang up and said he would like to (12) him about the car. "All right, " Dave said, feeling happy. He asked the man whether ten o’clock the next morning would be (13) or not. "Fine, " the man said, "and I’ll (14) my wife. We intend to go for a ride in it to (15) it. "

The next morning, at a quarter to ten, Dave parked the car in the square outside his front door, (16) to wait there for the people who had (17) his advertisement. Even Dave had to (18) that the car really looked like a wreck. Then, soon after he had got the car as clean (19) it could be, a police car stopped just behind him and a policeman got out. He looked at Dave’s car and then said, "Have you reported this (20) to us yet, sir\

5（）

A. some

B. neither

C. none

D. most