保险策略可以在（）情况下，减少投资者损失 A.股价下跌 B.股价上涨 C.股价变化幅

简述鼻内窥镜手术的常见并发症。

下列有关收益公司债券表述不正确的是（）

A.收益公司债券是只有当公司获得盈利时才向持券人支付利息的债券

B.收益公司债券不会给发行公司带来固定的利息费用

C.收益公司债券对投资者而言预期收益较高

D.收益公司债券对投资者而言风险较小

某厂工人，男，58岁，从事高分子聚合物生产，工龄20年。最近因神经衰弱、肝区痛入院检查，经查体确诊为肝血管肉瘤。 该名工人的工种可能是（）

A.焦炉工

B.清釜工

C.装卸工

D.分析工

E.检修工

辽有五京：上京临潢府（今内蒙巴林左旗）、东京辽阳府（今辽宁辽阳）、中京大定府（今内蒙宁城）、南京析津府（今北京）、（）。

Vienna was one of the music centers of Europe during the classical period, and Haydn, Mozart, and Beethoven were all active there. As the (1) of the Holy Roman Empire (which included parts of present-day Austria, Germany, Italy, Hungary, Czech and Slovakia), it was a (2) cultural and commercial center (3) a cosmopolitan character. Its population of almost 250,000 (in 1800) made Vienna the fourth largest city in Europe. All three (4) masters were born elsewhere, but they were (5) to Vienna to study and to seek (6) . In Vienna, Haydn and Mozart became close friends and influenced each other’s musical (7) . Beethoven traveled to Vienna at sixteen to play for Mozart; at twenty-two, he returned to study with Haydn.

Aristocrats from all over the Empire spent the winter in Vienna, sometimes bringing their private (8) . Music was an important part of court life, and a good orchestra was a (9) of prestige. Many of the nobility were excellent musicians.

Much music was heard in (10) concerts where aristocrats and wealthy commoners played (11) professional musicians. Mozart and Beethoven often earned money by performing in these intimate concerts. The nobility (12) hired servants who could (13) as musicians. An advertisement in the Vienna Gazette of 1789 (14) : " Wanted, for a house of the gentry, a manservant who knows how to play the violin well. "

In Vienna there was also (15) music, light and popular in (16) . Small street bands of wind and string players played at garden parties or under the windows of people (17) to throw (18) money. Haydn and Mozart wrote many outdoor entertainment (19) , (20) they called divertimentos or serenades. Vienna’s great love of music and its enthusiastic demand for new works made it the chosen city of Haydn, Mozart and Beethoven.

7（）

A.style

B.genre

C.theme

D.emotion