Question

【题目】There are three separate sources of danger in supplying energy by nuclear power.

First, the radioactive (有放射性的) material must travel from its place of production to the power station. Although the power stations themselves are strongly built, the containers used for the transport of the materials are not. Normally, only two methods of transport are in use, namely road or rail. Unfortunately, both of these may have an effect on the general public, since they are sure to pass near, or even through, heavily populated areas.

Second, there is the problem of waste. All nuclear power stations produce wastes that in most cases will remain radioactive for thousands of years. It is impossible to make these wastes non-radioactive, and so they must be stored in one of the inconvenient ways that scientists have invented. For example, they may be buried under the ground, or dropped into deserted mines, or sunk in the sea. However, these methods do not solve the problem, since an earthquake could easily break the containers.

Third, there may occur (发生) the danger of a leak (泄漏) or an explosion at the power station. As with the other two dangers, this is not very likely, so it does not provide a serious objection (不赞成，反对) to the nuclear program. However, it can happen.

Separately, these three types of dangers are not a great cause for worry. Taken together, though, the probability of disaster is extremely high.

【1】【改编】Which of the following is not true?

A. It is likely that a leak or an explosion occurs at a power station.

B. It is not usual for radioactive materials to be conveyed across land.

C. The containers are likely to be broken by an earthquake.

D. Nuclear wastes remain risky in most cases for many years.

【2】The author thinks that the ways to store nuclear wastes are __________.

A. easy B. impossible

C. reasonable D. ineffective

【3】【改编】What do we learn from the last paragraph?

A. The power station is a place that frees from danger.

B. The dangers of nuclear energy could be prevented.

C. The general public are opposed to the nuclear program.

D. By itself, none of the three dangers is very likely to lead to much worry.

【4】What is this passage about?

A. Uses of nuclear power.

B. Dangers from nuclear power.

C. Public anger at nuclear power.

D. Accidents caused by nuclear power.

Answer 1

【答案】

【1】B

【2】D

【3】D

【4】B

【解析】

试题分析：本文讲述核力供能有三种独立的危险源。第一点，必须将放射性物质从生产地运送大发电站。虽然核电站本身建的比较牢固，所用的容器却不是很坚固。通常使用的有两种运输方式，即道路运输和铁路运输，不幸的是，这两种运送方式都可能对公众产生不利影响，因为他们一定靠近甚至穿过人口稠密的地区。第二点，废物污染的问题。大多数情况下，核电站所产废物能够保持数千年的放射性。这些物质的放射性是不可以去除的，所以必须用科学家发明的不方便的方式之一去储存它们。例如，埋到地下，扔进废弃的矿井，或者是沉入海底。然而，这些方式并不能根治这个问题，原因是这些“容器”很容易被地震之类的因素所破坏。第三点，在发电站产生泄漏或者爆炸之类的事故。如同其他两种危险源一样，这种情况发生的可能性不大，因此它并不是反对核计划的一个有力论据。然而，此类事故还是可能发生的。另外，这三种危险单独来看，并不会引起太大的恐慌。但是放在一起考虑的话，核力供能的灾害概率就极大了。

【1】细节题：根据第一段Normally, only two methods of transport are in use, namely road or rail. Unfortunately, both of these may have an effect on the general public, since they are sure to pass near, or even though, heavily populated areas.说明核材料被运输是很正常的事情，故选B。

【2】推理题。根据文章第2，3，4段since they are sure to pass near, or even though, heavily populated areas.和However, these methods do not solve the problem, since an earthquake could easily break the containers.以及so it does not provide a serious objection to the nuclear program. However, it can happen.说明这三种方法都有很多的危险性，并不是十分的有效。故选D。

【3】推理题。根据最后一段Separately, these three types of dangers are not a great cause for worry. Taken together, though, the probability of disaster is extremely high.这三种危险单独来看，并不会引起太大的恐慌，但如果把这三种危险合在一起，那么就很危险了。故选D。

【4】主旨大意题。文章主要讲述了核材料的危险性。故选B。