简要病史：男性，27岁，间断上腹隐痛2年，呕血1天。

患者男性，36岁。烦躁，脸色苍白，出冷汗，晕厥数小时，急诊就医。20天前遇车祸，妻子丧生，本人右肱骨中段骨折。已复位治疗。10年前虽患胃病，治愈。近10年余无上腹胀痛，餐后饱胀，恶心。就诊前解柏油样黑便一次。家庭中有肝癌病史。体检：T37．5℃，P86次/分，R25次/分，Bp80/40mmHg。腹部平软，肝脾未触及。脉细数，舌质淡，白苔薄白。

提示：入院第2日，白细胞11．0×10⁹/L，BUN13mmol/L，胃镜检查：全胃广泛．多发性糜烂．出血灶及粘膜水肿。初步诊断主要考虑什么病（）

A.腐蚀性胃炎并大出血

B.胃.十二指肠球部溃疡并大出血

C.卓-艾氏综合征

D.应激性溃疡并出血

E.尿毒症并上消化道出血

F.胃癌并大出血

修改后的个人所得税法于2011年9月1日起施行。该法规定：“工资、薪金所得，适用超额累进税率，税率为百分之三至百分之四十五。”“工资、薪金所得，以每月收入额减除费用三千五百元后的余额，为应纳税所得额。”这意味着个税起征点将提高到3500元。这表明[ ]

A．我国政府正努力实现收入分配的绝对公平

B．社会主义就是搞平均主义

C．我国政府正为实现分配公平作出不懈努力

D．社会公平在我国已真正实现

1999年10月，我国某网络公司甲与美国某计算机公司签订了进口100台计算机的买卖合同。合同约定：价格条件为每台 CIFINCOTERMS2000大连1000，美元，卖方应于1999年12月20日前交货；付款条件是买方在接到装船通知后，在货物装船30天期间内，由中国银行大连分行开立以卖方为受益人的不可撤销的即期信用证；卖方凭合同规定的各种单据，按信用证规定转议付行议付货款；信用证有效期延至装船后15天内，付款单据中须包括已装船的空白背书的清洁提单。　　1999年11月20日，中国银行大连分行根据甲公司的指示开出了金额为100000美元的信用证，并委托纽约一家银行通知并议付此信用证。　　1999年12月5日，乙公司将100台计算机装船后，持信用证所要求的提单、保险单、发票等票据，到议付行议付货款，该议付行经过审查，即付100000美元给乙公司。10天后，买卖双方得知运输货轮在航运途中遇到特大风浪而触礁，船身被撞穿一个大洞，海水进船，致计算机遭受水渍损失，主机全部受潮不能使用。与此同时，开证行已收到议付行寄来的全套单据，要求付款。甲公司以货物全部灭失为由指示开证行拒绝付款。

该批货物的风险应由哪方承担为什么

You may have never heard of Ladislao Biro, but you have certainly heard of the pen he invented—the ballpoint pen, or biro. Before Biro invented his pen, people wrote with fountain pens. The ink smudged(弄脏) and blotted and the pens sometimes leaked. In the 1930s Biro was a magazine editor in Budapest in Hungary. He noticed that the inks which the magazine’s printers used dried very quickly. Biro wondered if quick-drying inks could be used in pens. He came up with the idea of a tube of ink with a free-moving ball on the end. As a person wrote, the ball collected ink from the tube and rolled it on to the paper. The pen would be cheap and could be thrown away when the ink ran out.

Biro began to work on his invention, but before he could patent it the Second World War broke out. Biro left war-torn Europe and fled to Buenos Aires in Argentina. There, he and his brother Georg, who was a chemist, began to improve the pen. In the early 1940s Biro began to manufacture his new pen, the biro. In 1944, he sold his invention to another company, who began to mass-produce the pen for the British and American armed forces.

Biro was pleased that his pen was popular, but he did not gain much from his invention. The biro was later sold to the French firm, Bic, who now sell twelve million pens a day. Biro sank into obscurity in South America. His name, however, has become a household word.

48. The reasons for the popularity of ballpoint pens are these EXCEPT that_______.

A. the inks dried very quickly                      B. they were cheap

C. they were easy to carry around           D. they were mass-produced

49. Which of the following is the correct order of the events that happened to Biro?

a. applied for patent for first ballpoint pen

b. began to manufacture pens

c. fled from Hungary to escape Nazis

d. sold his invention

A. a c d b                    B. c d a b           C. a c b d           D. c a b d

50. The underlined part “sank into obscurity”(last paragraph) is closest in meaning to“_______”.

A. became unknown to many people       B. became popular with people

C. lost interest in business                         D. lost a lot of money

51. What does the passage mainly tell us about Biro?

A. He is successful in business.                 B. He is an important inventor.

C. He is a famous magazine editor.         D. He is a popular writer.

最适宜做妊娠试验的标本是（）

A.随机尿

B.晨尿

C.餐后尿

D.12小时尿

E.24小时尿