肝硬化门静脉高压最突出的表现为（） A.厌油腻 B.黄疸 C.齿龈出血 D.消瘦乏力

什么是PNR？PNR的形成最快需要几个步骤？

以下是我国河、海、陆三项联运的是[ ]

A、武汉

B、西安

C、南京

D、上海

自2013年8月首播以来，央视举办的《中国汉字听写大会》引起收视热潮，受欢迎程度直逼收视率最高的电视节目，深深触动了国人的神经，大大激活了国人的母语情结。节目总导演关正文说，节目灵感来自美国的全国拼字比赛，它让来自不同文化背景的人在共同的美国梦中找到了共同点。你认为央视举办这样的节目

①有利于凝聚中 * * 力量，共筑中国梦     

②徒劳无益，电脑键盘早已代替了汉字书写 

③是积极传承中 * * 优秀传统文化的重要举措 

④是大胆汲取和借鉴世界其他民族优秀文化营养的表现

A．①②

B．①③

C．②③

D．③④

Eddie McKay, a once forgotten pilot, is a subject of great interest to a group of history students in Canada.

It all started when Graham Broad, a professor at the University of Western Ontario, found McKay’s name in a footnote in a book about university history. Mckay, was included in a list of university alumni who had served during the First World War, but his name was unfamiliar to Broad, a specialist in military history. Out of curiosity, Broad spent hours at the local archives in a fruitless search for information on McKay. Tired and discouraged, he finally gave up. On his way out, Broad’s glance happened to fall on an exhibiting case showing some old newspapers. His eye was drawn to an old picture of a young man in a rugby uniform. As he read the words beside the picture, he experienced a thrilling realization. "After looking for him all day, there he was, staring up at me out of the exhibiting case," said Broad. Excited by the find, Broad asked his students to continue his search. They combed old newspapers and other materials for clues. Gradually, a picture came into view.

Captain Alfred Edwin McKay joined the British Royal Flying Corps in 1916. He downed ten enemy planes, outlived his entire squadron as a WW1 flyer, spent some time as a flying instructor in England, then returned to the front, where he was eventually shot down over Belgium and killed in December 1917. But there’s more to his story. "For a brief time in 1916 he was probably the most famous pilot in the world," says Broad. "He was credited with downing Oswald Boelcke, the most famous German pilot at the time." Yet, in a letter home, McKay refused to take credit, saying that Boelcke had actually crashed into another German plane.

McKay’s war records were destroyed during World War Two air bombing on London-an explanation for why he was all but forgotten.

But now, thanks to the efforts of Broad and his students, a marker in McKay’s memory was placed on the university grounds in November 2007. "I found my eyes filling with tears as I read the word ’deceased’ next to his name," said Corey Everrett, a student who found a picture of Mckay in his uniform. "This was such a simple example of the fact that he had been a student just like us, but instead of finishing his time at Western, he chose to fight and die for his country.\

McKay’s flying documents were destroyed in （）.

A．Belgium

B．Germany

C．Canada

D．England

锅炉定期排污是排除炉水中（）和锅炉放空用。