Do you drink water that's been left sitting out overnight or even for another day? Have you noticed it tastes different?
Tap water that has been left to sit out slowly begins to acquire(获得) off taste. Many people think that this is because of microorganisms. But that's not what makes old water taste not fresh. For that we can thank carbon dioxide. After about 12 hours, tap water starts to go flat as carbon dioxide in the air starts to mix with the water in the glass, lowering its PH and giving it an off taste. But it's most likely safe to drink.
However, back to those microorganisms. If you use a dirty glass day after day, there is more of a chance of bacteria making themselves known; a risk that increases if you share the glass with another mouth as well. But assuming(假设) you use a fresh glass every few days, you probably won't have a problem unless the glass has been touched by dirty fingers, and especially if those dirty fingers went unwashed after using the bathroom.[
As for plastic water bottles that have been left out in the sun or in the car, step away from the bottle, warns Dr. Kellogg Schwab, director of the Johns Hopkins University Water Institute. "A chemical called biphenyl-A, or BPA, along with other things used to make plastic can leach(过滤) into your water if the bottle heats up or sits in the sun," he explains. BPA, as you probably know, has been linked to everything from heart disease to cancer. Schwab also adds that plastic used for commercial bottled water isn't meant to be washed or refilled, so use only one time and recycle. Or don't buy them at all; use refillable water bottles instead.
1.Tap water begin to acquire an off taste because of______ .
A. carbon dioxide B. BPA
C. the glass D. the microorganism
2.According to Paragraph 2, tap water that's been left sitting out for 12 hours____.
A. contains few microorganisms B. is still safe to drink
C. tastes better D. is most likely undrinkable
3.What should we do with plastic water bottles that have been left out in the sun or in the car?
A. Use them after they cool down.
B. Clean them and use them again.[来
C. Throw them away.
D. Refill them with fresh water
4.Which of the following is true about BPA?
A. It is safe for people to use.
B. It is a kind of new material.
C. It is the main material to make plastic.
D. It can cause great harm to people.
寒假天地重庆出版社系列答案科目：高中英语 来源：福建省莆田市2016-2017学年高一下学期第二次月考英语试卷 题型：阅读理解
Whitebridge was a small lonely village where many old people came to live．Many of them had lots of old furniture，some of which they didn't want to keep．This was because there was not enough room for it．Every Saturday morning they put out what they didn't need and other people came and took it away if they wanted it．
Mr and Mrs Morton's children had grown up．The old couple moved to this small village just as many others did．The elderly in this small village were all suffering from loneliness，because they were hard to meet their children．
Every Saturday Mr and Mrs Morton had put out a very ugly old bear's head at the side of their gate，but nobody wanted it．Last Saturday they wrote “I'm very lonely here．”on a piece of paper and put it near the bear's head．
After a while，they found there was another bear's head put beside theirs，with another of paper．It said，“I'm lonely，too．”
1.When you visit Whitebridge，you can _______ ．
A. find some old furniture at the gate of some small houses every morning
B. see a bear's head in front of each house
C. take away any old furniture
D. see many lonely old people lived there
2.The Mortons wrote the sentence“I'm very lonely here”．It meant ．
A. they wanted someone to find another bear's head for it
B. they wanted someone to take the bear's head away
C. they might suggest they were lonely in the village
D. both B and C
3.Which of the following do you think is the best title for this passage？
A. A village for old people
B. I am Lonely，Too
C. The Ugly Bear's Head
D. A place where you can Take Old Furniture Freely
查看答案和解析>>
科目：高中英语 来源：贵州省2016-2017学年高二期末考试英语试卷 题型：七选五
Are you simply moving through your day without fully living? I think many of us have done this. Everyone wants to fully live every day. 1. So I’ve decided to share with you some ways to help you enjoy every moment.
Sit in the morning. When you wake up, in the quiet of the morning, sit on the floor. I often use this opportunity to stretch. I feel every muscle in my body. 2.
3. I like to take breaks from work, and go outside for a slow walk. Pay attention to your breathing, to everything around you, to the sounds and light of objects.
Read in silence. Find a quiet time and a quiet place, and read a good novel. Have no television or computers on nearby. 4. It might seem difficult to let your mind move from the present into the time of novel, but it’s a great patience in focus. Also, I love a good novel more than almost anything else.
Look at someone in a grateful way. 5. If you want, you can tell that person how thankful you are to him.
A. Walk slowly.
B. Work with force.
C. But this is easier said than done.
D. And just put yourself in the world of the novel.
E. It’s a way of building something good into your life.
F. I also just sit, and focus on my breathing going in and out.
G. Find someone you care about and be grateful for his existence.
查看答案和解析>>
科目：高中英语 来源：辽宁省辽源市2016-2017学年高二上学期期末考试英语试卷 题型：七选五
I was ten when I first sat with my grandmother behind the cashier(收银台) in her grocery store. 1. I quickly learned the importance of treating customers politely and saying “thank you.”
At first I was paid in candy. 2. I worked every day after school, and during the summer and on weekends and holidays from 8 a.m. to 7 p.m. My father helped me set up a bank account._ 3.
By the time I was 12, my grandmother thought I had done such a good job that she promoted me to selling cosmetics(化妆品). I developed the ability to look customers directly in the eye. Even though I was just a kid, women would ask me such things as “What color do you think I should wear?” I took a real interest in their questions and was able to translate what they wanted into makeup(化妆) ideas. 4.
The job taught me a valuable lesson: to be a successful salesperson, you didn’t need to be a rocket scientist—you needed to be a great listener. 5. Expect they are no longer women buying cosmetics from me; instead, they are kids who tell me which toys they would like to see designed and developed.
A. Later I received 50 cents an hour.
B. Before long, she let me sit there by myself.
C. I ended up selling a record amount of cosmetics.
D. Today I still carry that lesson with me: I listen to customers.
E. My grandma’s trust taught me how to handle responsibility（承担责任）.
F. Soon I found myself looking more beautiful than ever before.
G. Watching my money grow was more rewarding/worthy than anything I could have bought.
查看答案和解析>>
科目：高中英语 来源：福建省泉州市2016-2017学年高一上学期期末考试英语试卷 题型：单句改错
1.He persuaded some people go back with him to Greenland.
2.Biarni was hoping to join his father which was with Eric.
3.Some fish can produce sounds twice as louder as your speaking voice.
4.I tried to make my brother understand, but he was terrifying and stayed in the boat.
5.The hikes costs $2,500 included all flights and accommodation.
6.He asked Marco to serve in his court and sent him to do many important task.
7.He was also confused by the black stones people used to burning for fuel.
8.Later, these rocks proved that at one time in the distant past the Antarctic is covered by plants.
9.They were hopeful that this would help to save energy, reduce pollution and provide free public transport to everybody.
10.But a lot of people think that solar cars are either too slow nor unreliable.
查看答案和解析>>
科目：高中英语 来源：黑龙江省肇东市2016-2017学年高二下学期期中考试英语试卷 题型：完成句子
1.---Jack, this is the third time that you have been late this week!
---- Sorry, sir, but I was held _______ for 15 minutes on the way here in the traffic jam.
2.This kind of desk can be adjusted ___________the height you need..
3.I will not put up___________ your bad behavior any longer.
4.The police are appealing_________ the public for any information about the missing boy.
5.She has gone ________ a lot of things，so she knows exactly how to deal with such a person.
6.Eating too much fat can contribute________ heart disease and cause high blood pressure.
7.These books are intended ________ young children under12.
8.They were lost at sea，________ the mercy of wind and weather.
9.The hotel is not responsible ________ any loss or damage to guests’ personal property.
10.He took his little daughter to Disneyland in order to cheer her_________.
查看答案和解析>>
科目：高中英语 来源：黑龙江省肇东市2016-2017学年高二下学期期中考试英语试卷 题型：阅读理解
The sun is shining when I get on No. 151 bus. We passengers sit jammed together in heavy clothes. No one speaks. That’s one of the unwritten rules of Chicago commuting. Although we see the same faces every day, we prefer to hide behind our newspapers. The phenomenon is striking: people who sit so close together are using those thin sheets of newsprint to keep their distance.
As the bus approaches the Magnificent Mile, a voice suddenly rings out: “Attention! Attention!” Papers rattle (发出细小声). Necks crane (伸长). “This is your driver speaking.”
We look at the back of the driver’s head. His voice has authority.
“All of you put your papers down.”
The papers come down, an inch at a time. The driver waits. The papers are folded and placed on our laps.
“Now, turn and face the person next to you. Go ahead.”
Amazingly, we all do it. Still, no one smiles.
I face an older woman, her head wrapped tightly in a red scarf. I see her nearly every day. Our eyes meet. We wait, unblinking, for the next order from the driver.
“Now, repeat after me…” It is a command, delivered in the tones of a drill sergeant (操练军士). “Good morning, neighbor!”
Our voices are weak and timid. For many of us, these are the first words we have spoken today. But we say them at the same time, like schoolchildren, to the strangers beside us.
We smile and can’t help it. We have said it; the barrier has been broken. Good morning, neighbor. It is not so hard after all. Some of us repeat it. Others shake hands. Many laugh.
The bus driver says nothing more. He doesn’t need to. Not a single newspaper goes back up. I hear laughter, a warm sound I have never heard before on bus No. 151. This day is starting off better than most.
1.On hearing the sudden utterance of “Attention!”, the passengers ___________.
A. stopped reading and put down their newspapers immediately
B. looked up from the newspapers to see who was speaking
C. sat still without response
D. were frightened
2.The underlined word “commuting” in Paragraph 1 most probably means ___________.
A. daily traveling between home and work B. long-distance ride
C. communication technology D. behavior patterns
3.Which of the following is true according to the passage?
A. The passengers on the crowded bus are so absorbed in reading their newspapers that no one speaks.
B. The passengers are physically close together but mentally they keep each other at a terrible distance.
C. The passengers don’t follow the driver’s instruction at first.
D. When the bus driver says nothing more, the passengers pick up and read their newspapers again.
4.What would be the best title for the text?
A. The Warmth of Communication B. The Exchange of Information
C. The Power of Observation D. The Attitude to Loneliness
查看答案和解析>>
科目：高中英语 来源：江苏省牛津译林版英语Module 5 Unit 3 test4 题型：单项填空
(2014·巢湖高三检测)—It is reported on TV this morning that a group of college students went on an exploration in Huangshan，________ in the mountain because of their losing the way.
—Yes，I know.Worse still，in order to rescue them，many soldiers went to help，________ one of them to lose his young life.
A. trapped；caused B. trapping；causing
C. trapped；causing D. trapping；caused
查看答案和解析>>
科目：高中英语 来源：河北省（东校区）2016-2017学年高一下学期第二次月考（期中）英语试卷 题型：短文填空
Panl Frederic Simon is u famous 1.(music), singer and songwriter. He was born on October 13, 1941 in the USA. It’s been more than half a century since he2. (write) his famous song The Sound of silence with his partner Art GarfunkeL They also adapted3.old English folk song Scarborough Fair,which is still popular all over the world now.
Recently Paul Simon released4.(the) latest album Stranger to Stranger and received excellent reviews. And Wristband，which is one of the songs from the album, is often played on college radio.
5., Simon is ready to hang up his guitar and stop 6.(make)music. “Show busing dewsn’t hold any interest for me,” said the 74-year-old man.
Simon is planning7.(begin) a month-long Lour of Europe on October 17, shortly after his 75th birthday. After that, he’s going to travel for a year, perhaps8.his wife, It’s an act of courage to let go, ” said Simon. “I am going to see9. will happen if I let go. Then I’m going to see who I am.”
If he does quit music. Simon will bring a great career to s close, which has spanned sixty years lie has won more than a dozen Grammys and produced a lot of10. (came)songs.Paul Fredric Simon has been named by Time Magazine one of the “100 Peaple Who Shaped the World”,
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
