【題目】根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)，選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

Indoor air pollution belongs to one of the top five environmental health risks. It is a fact that air pollutants in your home may be containing harmful particles(顆粒) for our health. It is a wise way to control it. 【1】

What are the pollutants that come in indoor air pollution?

【2】 Those particulate matters include dust, smoke and other particles which are generated from the combustion(燃燒)appliances such as cooking stoves. It can also contain tiny organism such as viruses, bacteria, dust mites.

___【3】 Building material can also bring pollutants such as paints, cleaning products, pesticides(殺蟲(chóng)劑) and so on. How to deal with indoor air pollution?

There are some ways you can do to deal with your indoor air pollution. 【4】 However, if the contaminants come to the outdoor environment, you have to find an alternative. This cleaning device(裝置)can be a good option for your problem.

Air cleaning device is designed to be able to remove virtually all the pollutants contained in the indoor environment. There are basically two types of air cleaning device, whole house air and portable air cleaning device. Portable air cleaner is ideal for small room or specific area. 【5】

A. Generally, indoor air pollution contains pollutants, such as particulate matters and gaseous pollutants.

B. However, it is better to know the harmful particles that come in the air in your home.

C. The gaseous pollutants are mostly generated from the process of combustion including vehicle exhaust, gas cooking stves, and also tobacco smoke.

D. The first thing you can do is to give ventilation(通風(fēng)) for your home with clean outdoor air.

E. Indoor air pollution contains many harmful chemical matters.

F. Meanwhile, whole house air cleaner can cover larger area in your home.

G. On the contrary, large air cleaner can get rid of all the pollutants.

【答案】

【1】B

【2】E

【3】C

【4】D

【5】F

【解析】

試題分析: 室內(nèi)空氣污染對(duì)我們的健康有害, 污染物主要有粉塵煙霧和有害的病菌和塵螨。做法主要是多通風(fēng)和殺菌。

【1】B 考查對(duì)上下文語(yǔ)境的理解�？�前的意思是：室內(nèi)空氣污染屬于頂級(jí)的五個(gè)環(huán)境健康風(fēng)險(xiǎn)之一�？赡芎袑�(duì)我們的健康有害的顆粒�？刂扑苊髦�。所以這里選B（然而，知道你家里空氣中有哪些有害粒子比較好。）與上文一致。

【2】E考查對(duì)上下文語(yǔ)境的理解。空后的意思是：這些顆粒物包括粉塵、 黑煙和其他從燃燒用具如煮食爐中生成的粒子。它還可以包含微小的生物，如病毒、 細(xì)菌、 塵螨。所以這里選E（室內(nèi)空氣污染包含許多有害的化學(xué)物質(zhì)。）與下文一致。

【3】C考查對(duì)段落的理解。空后的意思是：建筑材料也可以帶來(lái)污染物，如油漆、 清潔產(chǎn)品、殺蟲(chóng)劑等等。如何處理室內(nèi)空氣污染問(wèn)題? 所以這里選C（氣態(tài)污染物主要包括汽車尾氣、 煤氣爐和吸煙過(guò)程中生成的。）與上文一致。

【4】D 考查對(duì)上下文語(yǔ)境的理解�？涨暗囊馑际牵�有一些做法可以處理你室內(nèi)空氣污染�？蘸蟮囊馑际牵喝欢�，如果污染物在室外環(huán)境，你必須找到一種替代品。這種清洗設(shè)備可以是解決您的問(wèn)題的一個(gè)很好的選擇。所以這里選D（你可以做的第一件事是讓您的家和干凈的室外空氣通風(fēng)。）與上文一致。

【5】F 考查對(duì)上下文語(yǔ)境的理解�？涨暗囊馑际牵�空氣凈化設(shè)備設(shè)計(jì)必須能夠去除幾乎所有包含在室內(nèi)環(huán)境中的污染物�；旧嫌袃煞N類型的空氣凈化設(shè)備: 整個(gè)房間的空氣過(guò)濾器和便攜式空氣凈化設(shè)備。便攜式空氣濾清器是理想的小房間或特定區(qū)域。所以這里選F（而，整個(gè)房間的空氣過(guò)濾器可以覆蓋您家更大的區(qū)域。）與上文一致。

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_________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

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