{{B}}"Salty" Rice Plant Boosts
Harvests{{/B}} British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more. Tim Flowers and Tony Yeo, from Sussex University’s School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty. The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice. It is estimated that each year more than 100 hectares (公顷) of agricultural land are lost because A. They are students at Sussex University. B. They are rice breeders. C. They are husband and wife. D. They are colleagues at an institution of higher learning. [单项选择]下列规范中不属于社会规范的是()
A. 法律规范 B. 道德规范 C. 技术规范 D. 社会团体规范 [判断题]从泉水的矿物质含量来划分,小于1克/升为淡水泉,超过此标准的为矿泉。
[单选题]()在未设置避车台的桥梁上躲避列车。
A.禁止 B.允许 C.确认安全时允许 D.通过时允许 [单选题]以下情形不可以判定为重大事故隐患的是()。
A.违反法律、法规有关规定,整改时间长或可能造成较严重危害的 B.涉及重大危险源的 C.具有中毒、爆炸、火灾等危险的场所,作业人员在3人以上的 D.因外部因素影响致使生产经营单位自身难以排除的 [单选题]运用客车严禁临时配线。确需改造的,须经()批准。
A.铁路局 B.车辆段 C.车辆主管部门 D.铁道部 [多项选择]胎盘剥离的征象()。
A. 宫体变硬呈球形 B. 脐带自行下降延长 C. 阴道大量出血 D. 子宫底升高达脐上 E. 产妇主诉舒适感增加 [单项选择]与肾相关联的情志是()。
A. 怒 B. 喜 C. 思 D. 悲 E. 恐 [简答题]陈某为求职,要求制作假证的李某为其定制一份本科文凭。双方因价格发生争执,陈某恼羞成怒,长时间勒住李某脖子,致其窒息身亡。(事实一)
陈某将李某尸体拖人树林,准备逃跑时忽然想到李某身有财物,遂拿走李某手机、现金等物,价值1万余元。(事实二) 陈某在手机中查到李某丈夫赵某手机号,以李某被绑架为名,发短信要求赵某交20万元“安全费”。由于赵某及时报案,陈某未得逞。(事实三) 陈某逃至外地。几日后,走投无路向公安机关投案,如实交代了上述事实。(事实四) 问题: 1.对事实一应如何定罪为什么 2.对事实三应如何定罪为什么 3.事实四是否成立自首为什么 [单项选择]()石清在何人身上搜出了“玄铁令小包”?
A. 李大元 B. 周牧 C. 冯镇武 D. 元澄道人 [单项选择]在所列的软件中:①WPS Office 2003;②Windows 2000;③财务管理软件;④UNIX;⑤学籍管理系统;⑥MS-DOS;⑦Linux。
属于应用软件的有( )。 A. ①②③ B. ①③⑤ C. ①③⑤⑦ D. ②④⑥⑦ [单选题]固定资产零星购置在省公司级单位计划中,限下项目细化到(____)项目。
A.单个 B.单组 C.同类 D.单捆 [单项选择]独立于关节囊之外的是()
A. 髌韧带 B. 半月板 C. 后交叉韧带 D. 翼状襞 E. 腓侧副韧带 我来回答: 提交
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