[单项选择]{{B}}第二篇{{/B}}

U.S. Scientists Confirm Water on Mars NASA scientists said that Mars was covered once by vast lakes, flowing rivers and a variety of other wet environments that had the potential to support life. Laboratory tests aboard NASA’s Phoenix Mars Lander have identified water in a soil sample. The lander’s robotic arm delivered the sample Wednesday to an instrument that identifies vapors produced by the heating of samples. "We have water," said William Boynton of the University of Arizona, lead scientist for the Thermal and Evolved-Gas Analyzer, or TEGA. "This is the first time Martian water has been touched and tasted. " The robotic arm is a critical part of the Phoenix Mars mission. It is needed to trench into the icy layers of northern polar Mars and deliver samples to instrum A. Vast lakes. B. Flowing rivers. C. Water in a soil sample. D. Living things. 查看答案 更多"{{B}}第二篇{{/B}} U.S. Scie"的相关试题: [单项选择]{{B}}第二篇{{/B}} U.S. Scientists Confirm Water on Mars NASA scientists said that Mars was covered once by vast lakes, flowing rivers and a variety of other wet environments that had the potential to support life. Laboratory tests aboard NASA’s Phoenix Mars Lander have identified water in a soil sample. The lander’s robotic arm delivered the sample Wednesday to an instrument that identifies vapors produced by the heating of samples. "We have water," said William Boynton of the University of Arizona, lead scientist for the Thermal and Evolved-Gas Analyzer, or TEGA. "This is the first time Martian water has been touched and tasted. " The robotic arm is a critical part of the Phoenix Mars mission. It is needed to trench into the icy layers of northern polar Mars and deliver samples to instrum A. The sample vaporized away. B. Fresh material was exposed to the air. C. The samples got stuck inside the scoop. D. The robotic arm hit a hard rock. 查看答案 [单项选择]一本书内有三篇文章，第一篇文章的页数分别是第二篇页数和第三篇页数的2倍和3倍，已知第三篇比第二篇少10页，则这本书共有（）。 A. 100页 B. 105页 C. 110页 D. 120页 E. 以上结果均不正确 查看答案 [单项选择]{{B}}第二篇{{/B}} {{B}} Egypt Felled by Famine{{/B}} Even ancient Egypts mighty pyramid builders were powerless in the face of the famine that helped bring down their civilian around 2180 BC. Now evidence gleaned from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blem and the same or worse could happen today. The ancient Egyptians depended on the Nile’s annual floods to irrigate their crops. But any change in climate that pushed the African monsoons southwards out of Ethiopia would have diminished these floods. Dwindling rains in the Ethiopian highlands would have meant fewer plants to stablise the soil. When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt, along with sedim A. Change of climate. B. Famine. C. Food. D. Population growth. 查看答案 我来回答: 提交 最新试题 ●    [单选题]电工作业检修前的安全技术措施顺序依次( )。 ●    [多选题]用户( )的设计、施工安装和运行管理，应当符合国家标准或者电力行业标准。 ●    [单选题]在下列的食品污染物中,属于杂物的是( ) ●    [多选题]采用阻化剂防灭火时,应遵守下列规定(。( ) ●    [单选题]支队指挥中心接到( )及以上地方政府或森林防灭火指挥部的出动指令时应立即出动,并报总队指 ●    [单选题]若一张工作票下设多个小组工作，（ ）应指定每个小组的小组负责人（监护人），并使用工作任 网站地图 我要搜题网  版权所有  ©2024  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 截图扫码使用小程序[完全免费查看答案] 前往小程序 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码