列于应急保障系统第一位的是( )。A．物资与装备 B．人力资源保障 C．应急财务保

阅读理解。    

     Once there were two brothers who were twins. They looked exactly alike. They both had the same

dark brown hair, blue eyes and beautiful teeth. They were both 5'10" tall and both weighed 150 pounds.    

     They not only looked alike but also sounded alike on the telephone.  Not even their family could tell the difference. They dressed alike, listened to the same music, and read the same books. They even laughed at the same jokes.    

     When they were twenty-three ,they both got married and a year later both had sons. The years went by and as they began to grow old, they both wore glasses and finally they both became bald (秃头的). Then one day, one of the brothers got sick  and died. A few days later a man stopped the other twin on the

street.    

    “Excuse me for asking,” he said, “but was it you or your brother who died?” 

 l. It was not easy to tell the two men from each other because _________.   

A. they were brothers

B. they were handsome    

C. they were at the same age

D. they were twins  

2. The twin brothers ______.    

A. looked very much alike

B. had different colored hair    

C. looked like movie stars

D. wore different clothes  

3. They both became bald means ___.   

A. they became old

B. they had sons    

C. they had little hair

D. they got sick   

4.The only difference between the twins was ________.  

A. one was shorter than the other

B. one got sick and died    

C. one got married and had a son

D. one was bald and the other wasn't      

5. The man stopped the other twin on the street because______. 

A. he wanted to talk with him

B. he didn't know which of them died    

C. he wanted to make friends with him

D. he was surprised to see him on the street

下列微粒中，只有还原性的微粒是（　　）

A．H⁺

B．H₂O

C．Cl₂

D．S^2-

甲公司与乙公司经协商达成买卖合同，双方均未加盖公章或签字，不久甲公司交货，乙公司收货后付款。乙公司在使用中发现货物质量有问题，遂诉至法院，根据合同法规定，下列表述正确的是（）

A.合同无效，已履行部分双方返还

B.合同无效，但已履行部分双方不再返还

C.合同未成立，已履行部分双方相互返还

D.合同已成立，甲公司承担违约责任

明后期松江人何良俊记述：“（正德）以前，百姓十一在官，十九在田……今去农而改业为工商者三倍于前矣。昔日原无游手之人，今去农而游手趁食（谋生）者又十之二三也。大抵以十分百姓言之，已六七去农。”据此可知 [ ]

A．工商业的发展造成了农业的衰退            

B．工商业发展导致了社会结构的变动

C．财富分配不均引起贫富分化加剧          

D．无业游民增加促成了工商业的发展

男，68岁，慢性肝炎史20年，5年前出现食管黏膜下静脉曲张，3个月前发现肝右叶拳头大肿物，甲胎蛋白阳性，患者最可能的诊断是（）.

A.FP对原发性肝癌诊断有相对专一性。

B.慢性肝炎伴肝硬化

C.慢性肝炎伴胆管上皮癌

D.慢性肝炎伴食管静脉曲张

E.肝硬化伴肝细胞性肝癌