Question

【題目】 A cell phone is one of the few things that we hold close to our faces all the time, and yet it could possibly explode – this is what made the recent Samsung’s Galaxy Note 7 smart phone accidents so shocking.

According to technology news website, The Verge, flawed (有瑕疵的) phone batteries might be to blame.

Even if you are not a science student, you probably know that it is common sense that the negative end and the positive end of the battery should never touch. If they do, the battery will short-circuit (短路), causing a powerful electrical reaction that can destroy the battery and cause a fire.

This is why all lithium-ion (鋰離子) batteries – the kind that can be found in many of our devices (電子設(shè)備) like tablets and cameras – have a separator layer inside to stop the two ends from touching one another.

But somehow, the separators in some of the Samsung phones broke, causing explosions.

Overcharging is another problem that can make batteries heat up quickly. Fortunately, most batteries are designed to be able to automatically stop charging once they are fully charged. But again, this somehow failed to happen in some of the Samsung phones.

According to Lynden Archer, a materials scientist at Cornell University, US, we have already achieved 90 percent of the battery life possible from a lithium-ion battery. Customers’ demands that their devices get thinner and their battery have a longer life have given producers little choice but to try to put more power into thinner batteries. However, the more energy you put into a box, the more dangerous it’s going to be.

【1】A separator layer is put in lithium-ion batteries in order to ______.

A.ensure a longer battery life

B.reduce a certain electrical reaction

C.connect the anode and the cathode

D.prevent a battery from short circuiting

【2】What are the possible reasons for the Samsung phone explosions?

A.Pushing the limits of batteries.

B.Short circuiting and overheating.

C.Overcharging and thinner batteries.

D.Automatic charging and broken separators.

【3】What is the writer’s main purpose of writing the article?

A.To describe problems facing cell phone producers.

B.To warn us about the dangers of lithium-ion batteries.

C.To teach us common sense when it comes to batteries.

D.To explain the reasons for the Samsung phone explosions.

Answer 1

【答案】

【1】D

【2】B

【3】D

【解析】

這是一篇說(shuō)明文。這篇文章對(duì)三星手機(jī)爆炸的原因進(jìn)行了詳細(xì)的分析。

【1】細(xì)節(jié)理解題。根據(jù)This is why all lithium-ion（鋰離子）batteries - the kind that can be found in many of our devices like tablets and cameras - have a separator layer inside to stop the two ends from touching one another.（這就是為什么所有的鋰離子電池——在我們的許多設(shè)備中都能找到的那種，比如平板電腦和相機(jī)——內(nèi)部都有一個(gè)隔離層，防止兩端相互接觸。）可知在鋰離子電池中放一個(gè)分離層是為了阻止電池短路，所以選D。

【2】推理判斷題。根據(jù)If they do, the battery will short-circuit , causing a powerful electrical reaction that can destroy the battery and cause a fire.（如果他們這樣做，電池將短路，導(dǎo)致一個(gè)強(qiáng)大的電反應(yīng)，可以破壞電池，并導(dǎo)致火災(zāi)。）以及Overcharging is another problem that can make batteries heat up quickly.（過(guò)度充電是另一個(gè)會(huì)使電池迅速升溫的問(wèn)題。）可推斷出造成三星手機(jī)爆炸的直接原因是短路和過(guò)熱，所以選B。

【3】推理判斷題。根據(jù)文章第一段引出話題，即三星手機(jī)爆炸事件，后面分別分析了兩種可能的原因，可知這篇文章的目的是對(duì)三星手機(jī)爆炸的原因進(jìn)行了詳細(xì)的分析。故選D。

根據(jù)事物的定義或者對(duì)事物總體的概括，從而判斷出哪些具體事物或者具體的實(shí)踐應(yīng)該屬于定義的范圍或者是概括的范圍是我們經(jīng)常見(jiàn)到的推理判斷題的題型。要解決這樣的判斷題，首先要講對(duì)事物的定義或者對(duì)事物的總體概括要讀清楚，然后根據(jù)對(duì)比4個(gè)選項(xiàng)，哪個(gè)選項(xiàng)在定義或者概括范圍內(nèi)的。哪個(gè)就是正確的答案。如第二小題，根據(jù)If they do, the battery will short-circuit , causing a powerful electrical reaction that can destroy the battery and cause a fire.（如果他們這樣做，電池將短路，導(dǎo)致一個(gè)強(qiáng)大的電反應(yīng)，可以破壞電池，并導(dǎo)致火災(zāi)。）以及Overcharging is another problem that can make batteries heat up quickly.（過(guò)度充電是另一個(gè)會(huì)使電池迅速升溫的問(wèn)題。）可推斷出造成三星手機(jī)爆炸的直接原因是短路和過(guò)熱，所以選B。