Question

【題目】

Sometimes, you might not finish drinking your glass of water before you go to bed. You might want to drink it the next morning. But have you ever wondered if it is still safe to drink?

“If you have clean water in a clean glass, you’re fine to drink it for a day or two,” Kellogg Schwab from the Johns Hopkins University Water Institute in the US told Time.

But you may find that it tastes strange. That’s because after about 12 hours, the carbon dioxide in the air reacts with the water in your glass, slightly lowering its pH level.

Also, there might be more microorganisms in your water if you leave it out overnight. Microorganisms grow more quickly at room temperature. These microorganisms can stick to your glass. They can make you get sick more easily. But as long as you clean your glasses very often, this will not be a problem.

In countries like the US and UK, people often drink water directly from the tap . This is OK – however, tap water cannot be stored for a long time. Most experts say that tap water has a shelf life of six months, according to Zane Satterfield from West Virginia University, US. After six months, there is less chlorine in the water and bacteria start to grow. You’d better not drink the water otherwise you may get sick.

What about plastic water bottles? Schwab said people should be careful with them. If you leave a bottle of water under the sun or in a car for a long period of time, the plastic produces a chemical called BPA. This chemical can cause heart disease and cancer.

【1】According to the passage,the water in the glass tastes strange after about_______.

A. 12 hoursB. 2 hours

C. a day and a nightD. two days

【2】Why does the water taste strange after a night?

A. Because there is less chlorine in the water.

B. Because the glasses are dirty after a night.

C. Because the plastic produces a chemical called BPA

D. Because the carbon dioxide in the air reacts with the water , lowering its pH level.

【3】The underlined word “ microorganisms” in the fourth paragraph probable mean “________”

A. 漂浮物B. 微生物C. 抗生素D. 廢棄物

【4】Which of the following is not true?

A. You may get sick more easily after you drink the water overnight.

B. It’s not a right way to leave a bottle of water under the sun for a long time.

C. Many people drink water directly from the tap because of no bacteria in the running water.

D. Kellogg Schwab advised us to drink clean water in a clean glass for a day or two.

Answer 1

【答案】

【1】A

【2】D

【3】B

【4】C

【解析】

短文大意：本文是科普類閱讀，解釋了玻璃杯里的水在12個小時后為什么嘗起來很奇怪，為什么不能喝長期儲存的自來水以及塑料瓶裝的水。

【1】題意：根據(jù)文章，玻璃杯里的水在12個小時后嘗起來很奇怪�？疾榧�(xì)節(jié)理解。根據(jù)But you may find that it tastes strange. That’s because after about 12 hours, the carbon dioxide in the air reacts with the water in your glass, slightly lowering its pH level.（在大約12小時后，空氣中的二氧化碳會與玻璃杯中的水發(fā)生反應(yīng)，pH值會略有降低，這就導(dǎo)致了剩余的水的味道很奇怪），可知是12個小時選A。

【2】題意：為什么一晚上后水的味道會很奇怪?考查細(xì)節(jié)理解。A. Because there is less chlorine in the water. 因為水中的氯比較少。B. Because the glasses are dirty after a night. 因為經(jīng)過一個晚上后，玻璃杯很臟。C. Because the plastic produces a chemical called BPA因為塑料會產(chǎn)生一種叫做BPA的化學(xué)物質(zhì)。D. Because the carbon dioxide in the air reacts with the water, lowering its pH level.因為空氣中的二氧化碳與水發(fā)生反應(yīng)，降低了水的pH值。根據(jù)That’s because after about 12 hours, the carbon dioxide in the air reacts with the water in your glass, slightly lowering its pH level. 空氣中的二氧化碳會與玻璃杯中的水發(fā)生反應(yīng)使pH值會略有降低，可知選D。

【3】題意：第四段中標(biāo)下劃線的“microorganisms”可能是“________”的意思�？疾樵~義理解。根據(jù)下文的介紹Microorganisms grow more quickly at room temperature. These microorganisms can stick to your glass. They can make you get sick more easily. But as long as you clean your glasses very often, this will not be a problem.，可知這是一種肉眼看不到的東西，“微生物”符合句意，故選B。

【4】題意：下列哪個選項是不正確的?考查細(xì)節(jié)判斷。A. You may get sick more easily after you drink the water overnight. 喝了一夜的水，你可能會更容易生病。B. It’s not a right way to leave a bottle of water under the sun for a long time. 把一瓶水長時間放在太陽底下是不對的。C. Many people drink water directly from the tap because of no bacteria in the running water. 很多人直接從水龍頭喝水，因為自來水里沒有細(xì)菌。D. Kellogg Schwab advised us to drink clean water in a clean glass for a day or two.凱洛格·施瓦布建議我們用干凈的玻璃杯喝一兩天的清水。根據(jù)美國西弗吉尼亞大學(xué)薩特菲爾德的解釋After six months, there is less chlorine in the water and bacteria start to grow. You’d better not drink the water otherwise you may get sick.，可知六個月后自來水中氯的含量減少細(xì)菌開始生長，C項說法錯誤，故選C。