[单选题]按照《招标投标法》的规定,招标投标最显著的特点是( ). A.招标投标活动成为社会经济中最主要的采购方式 B.招标投标活动促进资源的优化配置 C.招标投标活动具有的各项基本原则 D.招标投标活动具有严格规范的程序
[单选题]在1810-1826年的西属拉丁美洲独立战争中,下列( )未获得独立. A.秘鲁 B.古巴 C.委内瑞拉 D.墨西哥
[单选题]狼群追捕马鹿,常常是几只狼在后面追,另几只狼在前面抄近路堵截,配合默契.狼群个体之间以及狼群与马鹿之间的关系分别是( )A.种内互助与捕食 B.种内斗争与竞争 C.种内斗争与捕食 D.竞争与种内斗争
[单选题]根据净现值法进行投资决策时,应该否决的方案为( ). A.方案的净现值大于零 B.方案的净现值小于零 C.方案的净现值等于零 D.方案的未来收益的总现值大于期初一次性总投资
[单选题]Single mums are better at raising their kids than two parents—at least in the bird world. Mother zebra finches have to work harder and raise fewer chicks on their own, but they also produce more attractive sons who are more likely to get a mate. The finding shows that family conflict is as important an evolutionary driving force as ecological factors such as hunting and food supply. With two parents around, there's always a conflict of interests, which can have a detrimental effect on the quality of the offspring. In evolutionary terms, the best strategy for any parent in the animal world is to find someone else to care for their offspring, so they can concentrate on breeding again. So it's normal for parents to try to pass the buck to each other. But Ian Hartley from the University of Lancaster and his team wondered how families solve this conflict, and how the conflict itself affects the offspring. To find out, they measured how much effort zebra finch parents put into raising their babies. They compared single females with pairs, by monitoring the amount of food each parent collected, and removing or adding chicks so that each pair of birds was raising four chicks, and each single mum had two--supposedly the same amount of work. But single mums, they found, put in about 25 percent more effort than females rearing with their mate. To avoid being exploited, mothers with a partner hold back from working too hard if the father is being lazy, and it's the chicks that pay the price. The offspring suffer some of the cost of this conflict, says Hartley. The cost does not show in any obvious decrease in size or weight, but in how attractive they are to the opposite sex. When the chicks were mature, the researchers tested the fitness of the male offspring by offering females their choice of partner. Those males reared by single mums were chosen more often than those from two-parent families. Sexual conflict has long been thought to affect the quality of care given to offspring, says zoologist Rebecca Kilner at Cambridge University, who works on conflict of parents in birds. But the experimental evidence is not great. The breakthrough here is showing it empirically. More surprising, says Kilner, is Hartley's statement that conflict may be a strong influence on the evolution of behaviour, clutch size and even appearance. People have not really made that link, says Hartley. A female's reproductive strategy is usually thought to be affected by hunting and food supply. Kilner says conflict of parents should now be taken into account as well. With which of the following statements would the author probably agreeA.Single mums produce stronger sons. B.Single mums do not produce daughters. C.Two-parent families produce less attractive children. D.Two-parent families produce more beautiful offspring.
[单选题]项目的实施将对有关生产要素的利用产生影响,从而产生一系列的连锁反应,通过( )来影响和刺激区域及宏观经济运行格局的改变. A.乘数效应 B.价格传递效果 C.技术扩散 D.瓶颈缓解效应
[单选题]17周岁的公民刘某在一家个人独资企业打工,所得收入足以维持个人的日常生活.根据《中华人民共和国民法通则》规定,刘某(). A.为无民事行为能力人 B.为完全民事行为能力人 C.为限制民事行为能力人 D.视为完全民事行为能力人
[问答题]小李:这个片子我看过,但我更喜欢看另一部《偷袭珍珠港》,反映的是日本偷袭美国在大西洋上的重要军事基地珍珠港的历史.你没见那原子弹落在海面上掀起的滔天巨浪,真得非常刺激. 改正:_________________
[问答题]举例说明促进幼儿园一小学迁移与衔接的措施.
[问答题]我跟朋友想买一套房,可以用他的公积金贷款买房,我们一起还贷款,然后写房产证上写两个人的名字么
[单选题]下列四组人物与事件的搭配中,错误的一组是( )A.林则徐──虎门销烟B.尼赫鲁──印度独立C.彭德怀──百团大战D.赫鲁晓夫─莫斯科保卫战
[单选题]水在锅炉管道中流动时,因速度突然变化导致压力瞬间增大,形成压力波并在管道中传播而引起的事故是( ). A.水击事故 B.汽水共腾事故 C.爆管事故 D.水蒸气爆炸事故
[填空题]购买二手房个人可以向银行申请按揭贷款吗
[写作]阅读下面的材料,根据要求写一篇不少于800字的文章.(60分) 当旅游大巴进入山区的一个拐弯处时,车上一对情侣被窗外的美景所吸引,便招呼司机停车.他们下车后,巴士继续前行.就在这对情侣驻足欣赏山景时,只听前方轰隆一声巨响,那辆巴士被山体滑坡滚落下来的巨石砸中,落入万丈深谷.事后得知,车上乘客无一生还.惊魂甫定之后,这对情侣无不感慨地说了一句话. 按常理,一般人都会说:“幸好我们不在车上!”而这对情侣却说:“假如我们不中途下车,那辆大巴就能赶在山石滑落之前驶过,车上的人也许就不会遭遇这场劫难.”对此,你有什么感想?请写一篇议论文或记叙文,立意自定,文题自拟,不少于800字.
[单选题]都市青年报社准备在5月4日青年节的时候推出一种订报有奖的营销活动.如果你在5月4日到6月1日之间订了下半年的《都市青年报》的话,就可以免费获赠下半年的《都市广播电视导报》.推出这个活动之后,报社每天都在统计新订户的情况,结果非常失望.以下哪项如果为真,最能够解释这项促销活动没能成功的原因A.根据邮局发行部门的统计,《都市广播电视导报》并不是一份十分有吸引力的报纸. B.根据一项调查的结果,《都市青年报》的订户中有些已经同时订了《都市广播电视导报》. C.《都市广播电视导报》的发行渠道很广,据统计,订户比《都市青年报》的还要多1倍. D.《都市青年报》没有考虑很多人的订阅习惯.大多数报刊订户在去年底已经订了今年一年的《都市广播电视导报》.
[单选题]对牙髓刺激性小的黏固剂是 A.自凝塑料 B.玻璃离子黏固剂 C.磷酸锌黏固剂 D.热凝塑料 E.环氧树脂黏固剂
[问答题]简述新历史主义.
[问答题]人的本质力量的对象化的内涵
[单选题]为了合理利用有限的土地,国家规定各级政府必须制定土地利用总体规划和( ). A.年度土地使用计划 B.季度土地使用计划 C.月度土地使用计划 D.土地利用五年计划
[填空题]在欧洲,意大利文坛由于受到法国象征主义的影响,在20世纪上半叶产生了在西方有重要影响的隐逸派.( )是隐逸派诗歌的重要代表,于1975年获诺贝尔文学奖.其代表作有《乌贼骨》、《境遇》等.
[单选题]In this passage, the word paralyzed means unable to______. A.move B.think C.work D.speak