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When we found him, he was a sorry sight. His clothes were torn, his hands bleeding. Before we reached him, we saw him fall. He lay a moment. Then he pulled himself to his feet, walked unsteadily a few yards through the woods and fell again. After we got him out, we went back to find the gun that he had thrown down. His tracks showed that for two days he had circled in the forest, within 200 yards of the road. His senses were so dulled by fear and tiredness that he did not hear the cars going by or see the lights at night. We found him just in time. This man, like others before him, had simply been frightened when he knew he was lost. What had been a near disaster might have turned out as only a pleasant walk, if he had made a few preparations before he stepped from the highway or off a known path. Whatever sense of direction that a man may have, it’s still largely a question of observation. A skilled woodsman always keeps an eye on his surroundings. He notes the shape of a mountain, the direction water flows through a swamp, and the way a tree leans across a path. With these in mind, he is still likely to turn around many times, but he is seldom lost. There are exceptions, of course, and once in a while a man does come across some strange problem that puts him into the “lost” situation. A rainstorm or sudden blizzard may catch him without a compass in his pocket. Darkness may find him in a rough area, where travel is dangerous without a light. When this happens, the normal first reaction is the fear of being laughed at as a result of his poor knowledge in the woods. He may also be concerned about the inconvenience that he will cause his friends when he doesn’t show up. This false pride may lead him to keep on the move in a false effort to find his way against all difficulties. The person who thinks ahead is seldom in great danger. He’ll be safe if he observes carefully, thinks ahead, and remains calm. 小题1:The writer suggested that if the man had not been found, he would have ______. A.been shot by a gun B.become confused C.been attacked by wild animals D.been in great danger 小题2:According to the text, if a person gets lost in the forest, at the very beginning, he would _____. A.worry about being laughed at B.push himself to find his way out C.feel it is convenient to ask for help from his friends D.feel sorry that he didn’t study hard enough 小题3:When a person tries to find his way in the woods, ________ is the most important. A.intelligence B.observation C.direction D.chance 小题4:The writer tells the story of the lost man as an example of people who_______. A.go into the woods by themselves B.don’t know how to signal for help properly C.are frightened when they think they are lost D.keep their head when they are in trouble
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【单选题】(63~67题共用题干) 王先生,40岁。突发上腹剧痛3h,转移至右下腹2h后就诊。体检:体温38.4°C,血压120/70mmHg,心率84/min,呼吸20/min。全腹压痛.反跳痛,腹肌紧张呈板样,以剑突下及右下腹为显著,肠鸣音消失,移动性浊音(±)。血白细胞9.0X109/L,中性粒细胞78% 63.考虑王先生最可能的病因是
A.
急性阑尾炎穿孔 性穿孔
B.
急性胆囊炎穿孔
C.
胃.十二指肠急
D.
出血坏死性胰腺炎
E.
绞窄性肠梗阻
【单选题】计算钢梁时,宜采用中性轴为(A)的横截面,设计铸铁时,宜采用中性轴为( )的截面。
A.
对称轴
B.
偏于受拉力边的非对称轴
C.
偏于压拉力边的非对称轴
D.
对称或非对称轴
【多选题】设计钢梁时,宜采用中性轴为( )的截面;设计铸铁梁时,宜采用中性 轴为( )的截面。
A.
对称轴;
B.
偏于受拉边的非对称轴;
C.
偏于受压边的非对称轴;
D.
对称或非对称轴;
【单选题】设计钢梁时,宜采用中性轴为( )的截面,设计铸铁梁时,宜采用中性轴为( )的截面。
A.
对称轴,偏于受压边的非对称轴
B.
偏于受压边的非对称轴,对称轴
C.
对称轴,偏于受拉边的非对称轴
D.
偏于受拉边的非对称轴,对称轴
【单选题】计算钢梁时,宜采用中性轴为( )的横截面,设计铸铁时,宜采用中性轴为( )的截面。
A.
对称轴;对称轴
B.
对称轴;偏于受拉力边的非对称轴
C.
对称轴;偏于受压力边的非对称轴
D.
对称;非对称轴
【判断题】设计钢梁时,宜采用中性轴为对称轴的截面。
A.
正确
B.
错误
【单选题】设计钢梁时,宜采用中性轴为对称轴的截面;设计铸铁梁时,宜采用中性轴为( )截面。
A.
对称轴
B.
偏于受拉边的非对称
C.
偏于受压边的非对称
D.
对称或非对称
【单选题】随着人们的生活和工作逐渐进入高楼大厦,人们接触日光的机会变少。研究发现,日光是合成维生素D的必要条件,而维生素D是促进钙吸收的关键因素。因此有人得出结论:现代人更容易患骨质疏松等因缺钙引起的疾病。 以下哪项为真,最能质疑上述结论?
A.
骨质疏松疾病患者多晒太阳就可以缓解或治愈
B.
现代人饮食结构中的含钙食品比以前丰富很多
C.
骨质疏松症患者接触日光的时长与其他人无异
D.
口服维生素D片是加了促吸收剂的合成配方
【多选题】设计钢梁时,宜采用中性轴为( )的截面;设计铸铁时,宜采用中性轴为( )。
A.
对称轴
B.
偏于受拉边的非对称轴
C.
偏于受压边的非对称轴
D.
对称轴或非对称轴
【简答题】图样及说明中的汉字,由于笔画较多,应采用简化汉字书写,必须遵守国务院公布的《汉字简化方案》和有关规定,并用 字体。长仿宋字体的高度h不应小于 ,
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