下面哪些传染病可呈现慢性病原携带状态：（） A.恙虫病 B.甲肝 C.登革热 D.流

某年轻男患者，在得知自己患了黄疸型肝炎后很恐惧，怕女友离开他，怕同事疏远他，因而恳求医师替他保密。医师很同情他，就决定替他保守这个秘密，但要求他抓紧治疗，不要耽误了病情。

医师的这种做法（）

A.基本是对的

B.全部是对的

C.是错误的

D.应该得到表扬，因为他很好地处理了矛盾

E.以上答案均不对

下列关于混凝土细骨料的质量要求说法正确的是（）。

A.天然砂的细度模数宜在2.2～3.0范围内

B.人工砂饱和面干的含水率不宜超过6%

C.强度等级≥C30和有抗冻要求的混凝土若采用天然细骨料，其含泥量不应超过3%

D.天然砂不允许含有机质

E.天然砂的轻物质含量应不高于1%

Although man has known asbestos （石棉） for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H.W.Johns, owner of a New York City Supply Shop for roofers, was responsible for the opening of that first mine．

Mr.Johns was given a piece of asbestos which had been found in Italy． He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves, which looked much like ordinary work gloves, he took red-hot coals from the fireplace and played with them in his hands.How astonished the customers were to discover that he was not burned at all．You can well imagine that he had increasing business in asbestos roofing materials． However, because it was very expensive to transport them from Italy to the United States, Mr.Johns sent out a young scientist to seek a source nearer home. This young man found great vein（岩脉）, in the province of Quebec in Canada．

Ever since 1881 Quebec has led the world in the production of this unusual mineral, which is made up of magnesium, silicon, iron, and oxygen．When it is mined, the asbestos is heavy, just as you would expect a mineral to be．When it is separated, a strange thing happens: the rock breaks down into fine, soft, soapy fibres．

Scientists do not know why the rock can be separated easily into threads, but they have found thousands of uses of this fireproof material, of the so-called “cloth of stone”．

小题1:Which title best expresses the main idea of this passage?

A．Asbestos mined in Canada

B．Fireproof matter

C．A “wonder” mineral

D．A new roofing material小题2:Johns proved his ability as a salesman by_______．

A．going into roofing business

B．carrying asbestos from Italy

C．sending a trained scientist

D．showing the use of asbestos gloves小题3:Which is the most important characteristic of asbestos that the author wants to show us?

A．It is like thread．

B．It feels soapy．

C．It burns easily．

D．It is unusually heavy．小题4:The author’s main purpose in writing this passage was to _______．

A．show the need for more scientists

B．compare asbestos with other minerals

C．increase the sales of asbestos

D．present facts about asbestos

考核，是指各级行政机关根据法定的管理权限，在一定的时间内，对公务员的工作成绩和服务情形进行定期和不定期的考核与评价。下列不属于考核的一项是( )。

A．机关规定，公务员在规定的时间内，必须按时上、下班，以考察勤勉程度

B．英国文官被要求考察工作知识、人格性情、判断力、热心情形等因素，每年一次

C．机关团委组织去香山秋游，书记建议大家比一比谁先上到山顶

D．美国实行工作标准考绩制，主要对公务员的工作数量、工作质量和工作适应能力进行考察评定

烤瓷合金的熔点应高于瓷粉的熔点

A．170～270℃

B．50～100℃

C．100～150℃

D．270～370℃

E．300℃以上