Question

【題目】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 (發(fā)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 (不贊成，反對(duì)) 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】【改編】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】【改編】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】

試題分析：本文講述核力供能有三種獨(dú)立的危險(xiǎn)源。第一點(diǎn)，必須將放射性物質(zhì)從生產(chǎn)地運(yùn)送大發(fā)電站。雖然核電站本身建的比較牢固，所用的容器卻不是很堅(jiān)固。通常使用的有兩種運(yùn)輸方式，即道路運(yùn)輸和鐵路運(yùn)輸，不幸的是，這兩種運(yùn)送方式都可能對(duì)公眾產(chǎn)生不利影響，因?yàn)樗麄円欢�靠近甚至穿過(guò)人口稠密的地區(qū)。第二點(diǎn)，廢物污染的問(wèn)題。大多數(shù)情況下，核電站所產(chǎn)廢物能夠保持?jǐn)?shù)千年的放射性。這些物質(zhì)的放射性是不可以去除的，所以必須用科學(xué)家發(fā)明的不方便的方式之一去儲(chǔ)存它們。例如，埋到地下，扔進(jìn)廢棄的礦井，或者是沉入海底。然而，這些方式并不能根治這個(gè)問(wèn)題，原因是這些“容器”很容易被地震之類的因素所破壞。第三點(diǎn)，在發(fā)電站產(chǎn)生泄漏或者爆炸之類的事故。如同其他兩種危險(xiǎn)源一樣，這種情況發(fā)生的可能性不大，因此它并不是反對(duì)核計(jì)劃的一個(gè)有力論據(jù)。然而，此類事故還是可能發(fā)生的。另外，這三種危險(xiǎn)單獨(dú)來(lái)看，并不會(huì)引起太大的恐慌。但是放在一起考慮的話，核力供能的災(zāi)害概率就極大了。

【1】細(xì)節(jié)題：根據(jù)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.說(shuō)明核材料被運(yùn)輸是很正常的事情，故選B。

【2】推理題。根據(jù)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.說(shuō)明這三種方法都有很多的危險(xiǎn)性，并不是十分的有效。故選D。

【3】推理題。根據(jù)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.這三種危險(xiǎn)單獨(dú)來(lái)看，并不會(huì)引起太大的恐慌，但如果把這三種危險(xiǎn)合在一起，那么就很危險(xiǎn)了。故選D。

【4】主旨大意題。文章主要講述了核材料的危險(xiǎn)性。故選B。