兆欧表开路电压的峰值与有效值之比不大于（）。 A.2 B.1 C.1.5

2007年5月，A公司与B公司订立了一份80万元的购货合同。合同约定：2007年6月1日B公司发货，2007年6月10日A交付货款。B公司如期付货，但A公司却未按合同规定交付货款。
2007年6月20日，B公司上门催讨货款，A公司借口货物质量不合格，拒绝付款。此后，B公司因为董事会人员调整，公司内部一直处于混乱状态，没有再提起A公司欠款之事。2009年5月10日，由于山洪暴发冲坏了B公司的办公大楼和厂房，2009年8月20日，B公司才恢复正常经营。2009年9月1日，B公司新任领导再次提起A公司欠款问题，准备提起诉讼。B公司新任领导认为虽已超过2年诉讼时效，但由于山洪暴发属于不可抗力，应引起诉讼时效的中止。经了解，B公司得知A公司的另一债权人D公司经向人民法院申请A公司破产的申请。
2009年10月1日人民法院依法宣告A公司破产。A公司主要的债权、债务情况如下：
①2007年5月20日，A公司以自己价值250万元的办公楼作抵押，向工商银行贷款200万元，期限3年；
②2007年9月30日，A公司又以该办公楼作抵押，向建设银行贷款150万元，期限1年。因A公司不能清偿到期贷款，建设银行已于2009年2月1日向法院起诉，案件正在审理过程中；
③D公司为A公司债务的保证人，在2008年4月10日曾代替A公司清偿债务65万元，但D公司在2008年4月20日曾欠A公司债务50万元，D公司向管理人提出行使抵销权，抵销对A公司的50万元的债务。
④上述用于抵押的办公楼拍卖价款为250万元。
要求：根据上述事实及有关法律规定，回答下列问题：

在以下5×5矩阵中，每个小方格中可填入一个汉字，要求每行每列均含有金、木、水、火、土5个汉字，不能重复也不能遗漏，根据已经给到的条件，矩阵中①所在方格中应填入的汉字是

A.金 

B.火 

C.水 

D.土

阅读图文材料，完成下列要求。（22分）

一位被热带雨林风光吸引的游客从马瑙斯出发，乘船沿内格罗河（图6）溯源而上，见两岸植被繁茂，河上很少有桥。行至内格罗河与布朗库河交汇处，发现两条河流的河水因颜色迥异，呈一黑黄分明的界限，景色令人震撼。船继续前行，岸边的沼泽渐渐映入眼帘……当晚他查阅资料，得知内格罗河河水因富含腐殖质，颜色乌黑，而布朗库河因含大量泥沙而呈黄色。

（1）分析内格罗河河水富含腐殖质但泥沙含量少的原因。（8分）

（2）试对“河上很少有桥”这一现象作出合理解释。（8分）

（3）你是否赞同在该地区拓展旅游观光业？请标明态度并说明理由。（6分）

阅读理解

     "What are you doing asleep on a park bench in the middle of the day naked?"

     "Well, you see, officer, it all started this morning. I woke up to the sound of the big master's alarm

clock and jumped off my doggy bed. I wandered down into the kitchen and sat down to wait for

breakfast."

     " Hang on! What do you mean by doggy bed?"

     "Well, I am actually a dog. Let me finish my explanation. Anyway, when the big master came

downstairs I could tell that it would be a busy day, because he was rushing around. He fed me quickly

and ran out of the door, not even bothering to get some breakfast for himself. This was fairly normal-he

hardly ate in the morning. "

     I finished my breakfast soon, and then I went upstairs to wake up the little master. After that, I had to

wake up the big mistress. Because I knew how much she hates it , I cautiously walked into the big room

and tried to wake her up gently. Unfortunately, as soon as my nose touched her side, she jumped straight

up and yelled at me to get out of her room. I did that straight away. I headed downstairs again. The little

master was already downstairs. After eating breakfast, he ran out. I followed him as usual and made sure

he got to school safely.

     On my way home, a van stopped beside me. Then I was stuck in a net and thrown into the van. I

started struggling and barking. Immediately I was given a needle and calmed down. When I woke up, I

was lying on a bed. Looking around, I realized I was in a science lab. Strangely, I found I wasn't a dog

anymore! I was human! I started yelling for help and an old man walked in. On seeing me, he shouted

excitedly, 'It worked! It worked!' Then I was given another needle. The next thing I remember is that

you woke me up. So that's why I ended up asleep here naked."

     "Very funny son, now come with me. By the way, what's your name?"

1. From what the man said we know that ________.

A. his big mistress seldom had breakfast

B. there were at least two bedrooms upstairs

C. he waited till his little master returned home

D. he woke up all his masters with his nose

2. What does the underlined word "it" in the fifth paragraph refer to?

A. Being woken up.

B. The dog entering the room.

C. Preparing breakfast.

D. The sound of the alarm clock.

3. What does the officer think of the man's explanation?

A. Funny and believable.

B. Reasonable and acceptable.

C. Unbelievable but interesting.

D. Imaginary but out of date.

4. What most probably will the officer do next?

A. Help the man find his big master.

B. Pursue the old man immediately.

C. Take the man to the police station.

D. Warn dog owners to look after their dogs.  

关于老年性瘙痒病以下叙述错误的是（）

A.多由于皮脂腺功能减退，皮肤干燥和退行性萎缩等因素引起

B.瘙痒以颈肩部为主

C.瘙痒一般为阵发性，严重者可表现为持续性瘙痒

D.继发损害可见抓痕、血痂及肥厚

E.使用性激素治疗可能有一定疗效