Question

【題目】 If you were on the street in Mexico today you might think you were in an operating room, surrounded by doctors. You could see many concerned people with masks (口罩) trying their best to stop the swine flu (豬流感). And the masks aren’t only being used in Mexico. A friend of mine traveling from New York City to Florida was given a mask and a pair of gloves just after he reached the airport. And another friend went to get a haircut only to be faced with a hairdresser wearing a mask!

But do the masks really work? Is covering your nose and mouth the key to stopping the swine flu? To find out the truth, ABC’s reporter Sharyn Alfonsi talked with germ (細(xì)菌) expert Dr. Elaine Larsen. It turns out that when you sneeze (打噴嚏) the air coming out of your mouth at a speed of one hundred miles per hour carries germs which can travel anywhere around you and make people around you infected (被感染).

However, whether you become infected actually depends on the weather. As Sharyn reported, when you sneeze, the germs leave your body in small drops of water coming out of your mouth. If the weather is wet, the wet air will make the small drops bigger and heavier and they drop down towards our feet. If this happens, we won’t become infected. But if the air is dry, those small drops can float higher up, making it possible for them to touch someone else’s nose, mouth or their mask.

Larsen says the masks can stop the germs well but after a few hours, they start to get wet, holding a lot of germs they come across and causing you to breathe them in. The masks do work, but the key to stopping the germs is changing your masks often.

【1】According to Para.1, in Mexico you can see that ____.

A.the patients are treated in the open air

B.some doctors work in the street

C.people speak little to each other in the street

D.many people wear masks in the street

【2】According to the passage a patient spreads germs mainly through ____.

A.breathingB.Speaking

C.touching othersD.sneezing

【3】We learn from the passage that on a wet day ____.

A.sick people will be infectedB.germs can spread very far

C.germs spread very quicklyD.few people will be infected

【4】If you keep wearing a mask for a long time, ____.

A.the mask will be old and worn outB.you’ll love the feeling of wearing it

C.germs will be kept away from youD.it will be easy for you to be infected

【5】What should we pay attention to when wearing masks?

A.Keeping the masks dry.B.Changing the masks often.

C.Choosing very thick masks.D.Wearing big masks.

Answer 1

【答案】

【1】D

【2】D

【3】D

【4】D

【5】B

【解析】

這是一篇說(shuō)明文。墨西哥的街道就像手術(shù)室，到處是戴口罩的人。戴口罩真的能阻擋豬流感嗎？答案是肯定的。但如果一個(gè)口罩戴得太久，上面附著的細(xì)菌就會(huì)變得很多，很容易被吸入體內(nèi)。所以一定要經(jīng)常更換口罩。

【1】

細(xì)節(jié)理解題。根據(jù)第一段“If you were on the street in Mexico today you might think you were in an operating room，surrounded by doctors.”可知如果你現(xiàn)在在墨西哥街上，你可能會(huì)覺(jué)得你在手術(shù)室里，被醫(yī)生包圍，所以在墨西哥街頭人們都戴口罩，故選D。

【2】

細(xì)節(jié)理解題。根據(jù)第二段“It turns out that when you sneeze the air coming out of your mouth at a speed of one hundred miles per hour carries germs which can travel anywhere around you and make people around you infected.”可知當(dāng)你打噴嚏的時(shí)候，從你嘴里以每小時(shí)一百英里的速度飛出來(lái)的空氣，攜帶的病菌可以到達(dá)你周?chē)�的任何地方并致使周�(chē)�的人感染，所以病菌是通過(guò)打噴嚏傳播的。故選D。

【3】

推理判斷題。根據(jù)第三段“If the weather is wet, the wet air will make the small drops bigger and heavier and they drop down towards our feet. If this happens, we won't become infected.”可知如果天氣潮濕，潮濕的空氣會(huì)讓小水珠更大更重，它們會(huì)落在腳下，如果這樣的話，我們就不會(huì)被感染�？赏浦�在潮濕的天氣里被感染的人會(huì)很少。故選D。

【4】

細(xì)節(jié)理解題。根據(jù)最后一段“Larsen says the masks can stop the germs well but after a few hours，they start to get wet，holding a lot of germs they come across and causing you to breathe them in.”可知如果戴口罩時(shí)間長(zhǎng)了，人也會(huì)由于將附在口罩上的細(xì)菌吸入體內(nèi)而被感染。故選D。

【5】

細(xì)節(jié)理解題。根據(jù)最后一段“The masks do work, but the key to stopping the germs is changing your masks often.”可知雖然口罩確實(shí)起作用，但是防止病菌的關(guān)鍵是要經(jīng)常更換口罩，所以佩戴口罩要經(jīng)常換，故選B。