未知题型 Of all the problems facing modern astronomers, perhaps the most fascinating is: 'Can intelligent life exist elsewhere?' Since the Earth is an unimportant planet moving round an unimportant star, it would be a pride on our part to suppose that we are the only intelligent beings in the universe. But to obtain proof is difficult. The main trouble is that our neighbor worlds, the bodies in the Solar system appear to be unsuitable for advanced life-forms. The Moon may be ruled out at once; it has hardly any atmosphere. Venus(金星) is little better; the surface temperature is extremely high and the atmosphere is mostly carbon dioxide. Mars with a very thin atmosphere and a severe shortage of water, may well support simple plant life but there seems no hope of finding animals, while the attractive Martians(火星人) of the story-tellers have long since been given up. Of course this has not stopped the flow of bright ideas for communicating with the supposed people on Mars. In the early nineteenth century the great mathematician Gauss suggested planting treepatterns in Siberia(西伯利亚), so that the Martians would see them and replay suitably. Following up this idea, the Austrian scientist Karl Littrow proposed digging very wide ditches in the Sahara, triangular in patterns, and then filling them with petrol or some substance so that, when lit, the ditches would present Martian observers with a 'flaming triangle' which would show the existence here of intelligent minds. Even better were the plans of Charles Cross, a French writer of the 1870's, who wanted to build a large mirror to reflect the sun's rays and concentrate them on the surface of Mars, thereby making a vast burning-glass. By swinging the mirror around, Cross explained it would be practicable to write words in the Martian deserts simply by burning the sand. For many years he bombared(轰击) the French government with literature about this plan and was very disappointed when no official interest was shown.The opinion of the writer is that ______.A．there may be other intelligent beings in the universeB．there are other intelligent beings in the universeC．people living on the earth are almost certainly the only intelligent beings in the universeD．people living on the earth are definitely the only intelligent beings in the universe

单项选择题 56岁妇女，绝经8年出现阴道不规则流血，妇检；宫颈光滑，阴道粘膜菲薄，宫体稍大，软，活动良，附件(一)初步诊断宫体癌，哪项体征最支持诊断：

未知题型 张某为一企业法定代表人，2009年取得以下收入： (1)该企业实行年薪制，张某每月取得工资3000元，12月取得年终效益工资64000元； (2)张某根据自己的创业心得，编写的长篇小说由出版社出版，按合同约定，出版社向张某预付稿酬10000元，作品出版后再付稿酬50000元；当年张某还授权某晚报连载该小说，历时2个月，每天支付稿酬180元，共获得稿酬10800元； (3)为改善住房条件，7月1日将自购已居住6年的唯一普通住房对外转让，原价100000元，合同标明转让价120000元；全年工资薪金所得应缴纳的个人所得税为( )元。D．12405