问题 单项选择题


本部分均为单选题,着重考查考生对语言文字的理解与驾驭能力。
这种能力包括:对词、句子、篇章一般意思和特定意义的理解;对比较复杂的概念和观点的准确理解;对语句隐含信息的合理推断;根据上下文,恰当选用词语;准确地辨明句义,筛选信息。
注意:问题可能是选择一个词语或一个句子,使表达最为准确,也可能是考查对文字内容的理解,你的选择应与题目要求最相符合。

阅读以下文字,完成以下问题。
在地球长期进化过程中积累起来的化石能源的有限性向人们提出一个严峻的问题:人类未来的新能源是什么
自从1954年世界上首座试验性质的核电站在前苏联投入使用以来,目前全球正在运行的核电站已达400多个。它主要是用中子轰击铀235或钚239,使原子核产生裂变,释放出大量能量。但是,用于核电站发电的裂变材料也是有限的,有专家估计,依照现行的核电站需要,地球上裂变材料用不到100年,因而许多专家认为,人类社会的未来能源将主要是聚变核能。
从太阳发出的似乎是无穷无尽的光和热以及氢弹的世大威力上,我们可以看到氢元素的核聚变反应会释放大量的能量。据测算,一升水中所含有的氢的同位素——氘,发生核聚变反应所放出的能量相当于300升汽油燃烧的能量。这就是说,地球现存的氘等聚变材料可供人类使用亿万年。所谓核聚变反应,就是在两个氢原子核充分接近时,它们之间的引力将使它们聚合在一起,同时放出大量能量。但是要使两个氢元素的原子核充分接近,就必须把它们加热到上亿度的高温才能克服相互间的静电斥力。而要使足够多的原子核有发生核聚变的机会,还必须把一定量的上亿度的反应材料约束足够长的时间。这正是受控核聚变研究的[ ]所在。从科学家们认识到核聚变将成为人类社会有希望的能源以来,已有半个世纪了。在发达国家中,受控核聚变研究已面临着科学上的突破,预计下世纪中叶示范性的商用核聚变反应堆将会问世。

下列说法符合原文意思的一项是( )。

A.人类所以不断寻求未来能源是因为化石能源和核裂变能源的蕴藏量极为有限

B.核聚变要真正成为人类社会未来的新能源,最关键的问题是要实现规模性的聚变

C.核聚变原理告诉我们:氢原子核之间“引力”与“斥力”并存,只是“斥力”大于“引力”

D.氢弹已研制成功的事实与示范性商用核聚变反应堆下世纪中叶将会问世的预测,两者并不矛盾

答案

参考答案:D

解析:解析:A项“核裂变能源的蕴藏量极为有限”属于夸大;B项关键问题应是“把一定量的上亿度的反应材料约束足够长的时间”;C项“斥力大于引力”没有根据。

单项选择题
填空题



The Commission is expected to propose allowing people to choose which legal jurisdiction they would come under, based on their (1) or their residency. But the proposal is set to (2) because of the very different laws on divorce that apply across the EU. The Commission wants to (3) problems over which law to apply when, for example, a married couple from one member state is (4) in another member state or when the couple is of different EU nationalities.
The (5) of member states are said to be (6) the idea and responded positively to a (6) which followed the (8) of a Commission Green Paper. With 15 percent of German divorces each year involving couples of different nationalities, the government of Berlin (9) see resolved the issue of which laws should apply.
But some member states are expected to resist the (10) which would involve allowing different divorce laws to be applied in their countries. For example, in Ireland where the divorce law states a couple must have been separated for four years, establish that their marriage has broken down and be offered (11) , a couple from Sweden could apply to an Irish court to allow them to divorce under Swedish law, where divorce can be (12) quickly.
The Irish government’s (13) to the Commission on the Green Paper stated: "Ireland is not in favor of allowing (14) to choose the applicable law, as this could be open to abuse.., such abuse would be likely to (15) most on divorce regimes, such as that of Ireland, which require a relatively long separation period." Ireland, like the UK, however, is allowed to choose whether to "opt-in" to such a proposal under rules agreed in the Amsterdam treaty. Malta has no such (16) but could (17) the proposal in the Council of Ministers since (18) approval will be required.
"It is going to lead to (19) ," said Geoffrey Shannon, Irish expert on the Commission on European Family Law, which examines the (20) of EU family law.
The proposal would also mean that judges would have to be trained in the divorce law of all 25 member states.