【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)。

Are you concerned about the effect of the haze(霧霾) in Singapore on the health of your children? Then you should read the following passage.

＂Young children, especially those with lung or heart illness, should avoid outdoor activity at PSI(Pollution Standards Index — used in Singapore) levels above 100,＂ says Dr Biju Thomas.

The immune system(免疫系統(tǒng)) of children is not mature. 1 Exposure to the haze can result in symptoms such as a blocked nose, dry throat, breathing difficulty, and so on.

Children who are exposed to the haze and experience any of these symptoms which are not serious should recover on their own in time if they limit their exposure to the haze. 2

To keep children safe during the haze in Singapore, parents should keep doors and windows closed at home. Ensure children drink plenty of pure water every day.

3 The answer is that there aren’t any N95 masks designed for use by children. That’s because these masks are made to create a seal(密封) around the mouth and nose of the adult user so particles(顆粒) can not get in. 4 Surgical masks may not offer enough protection from the harmful particles in the haze, which is very small (2.5 microns or less). There is usually some gap between the surgical mask and the face, through which the haze particles may easily get in. 5 However, if it is necessary to take children outdoors during a haze, parents may wish to offer children’s surgical mask to their children, if it brings them comfort, such as filtering out the smell from the haze.

A. So during a haze, children are especially at risk.

B. Are N95 masks and surgical masks suitable for children?

C. The available N95 masks may not fit tightly on the face of a child.

D. Allow children to make regular travels from one building to another.

E. However, if the symptoms continue, they should ask a doctor for help.

F. So you can use a conditioner instead of opening the windows regularly.

G. So it is best to keep children indoors to protect them from the haze when the PSI is high.

【答案】

【1】A

【2】E

【3】B

【4】C

【5】G

【解析】【文章大意】這篇短文主要提到了如何在霧霾天氣保護(hù)孩子的身體健康的問題。文章建議，由于孩子的身體免疫系統(tǒng)還不夠成熟，也沒有適合孩子使用的口罩，在霧霾天最好是讓孩子待在室內(nèi)。

【小題1】前一句說的是：兒童的免疫系統(tǒng)是不成熟的。后一句說的是：暴露在霧霾當(dāng)中會(huì)導(dǎo)致一些癥狀，比如鼻塞、嗓子干、呼吸困難等等，故選項(xiàng)A＂因此在霧霾期間，孩子們尤其危險(xiǎn)。＂符合語境。

【小題2】前一句說的是：如果限制孩子接觸霧霾，它們引起的癥狀會(huì)自然消失，故選項(xiàng)E＂然而，如果這些癥狀繼續(xù)，他們就必須向醫(yī)生請(qǐng)求幫助了。＂符合語境。

【小題3】根據(jù)后一句中的關(guān)鍵詞＂The answer is＂可知此處提出了某個(gè)問題，故選項(xiàng)B＂N95口罩和手術(shù)口罩適合孩子們嗎？＂符合語境。

【小題4】前一句說的是：這些面罩是單獨(dú)針對(duì)大人設(shè)計(jì)的，故選項(xiàng)C＂可買到的N95口罩可能與孩子的臉部貼合不太緊密。＂符合語境。

【小題5】前一句說的是醫(yī)用口罩也不適合防止這些霧霾，后一句說的是：然而，如果有必要在霧霾天氣帶孩子到戶外去……，故選項(xiàng)G＂因此當(dāng)PSI特別高的時(shí)候，為了保護(hù)他們不受霧霾的影響，最好是讓他們待在室內(nèi)。＂符合語境。

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