Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable(易受伤的)to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid(易吸收的液体). No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen(腹部).
1.According to Ms Davis, brain cancer increase ____.
A. among children B. among old people
C. in the twenties D. among pregnant women
2.Why do children easily be affected by radiation?
A. Because they haven’t grown up.
B. Because they are too young to protect themselves.
C. Because they use cell phones more often than adults.
D. Because their skulls are thinner and their brains are easily hurt.
3.What can we conclude from the last paragraph?
A. Pregnant women should keep cell phones away.
B. People should use cell phones in the correct way.
C. If you are a child, you’d better text than make phone calls.
D. When you use a cell phone, use a wired headset or the phone’s speaker.
4.What does the passage mainly talk about?
A. Be careful when using cell phones.
B. Don’t hold your cell phone against your ear.
C. Rats exposed to radiation have damaged DNA in their brains.
D. Low-energy radiation could damage cells that could lead to cancer.
高一英语阅读理解中等难度题
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable(易受伤的)to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid(易吸收的液体). No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen(腹部).
1.According to Ms Davis, brain cancer increase ____.
A. among children B. among old people
C. in the twenties D. among pregnant women
2.Why do children easily be affected by radiation?
A. Because they haven’t grown up.
B. Because they are too young to protect themselves.
C. Because they use cell phones more often than adults.
D. Because their skulls are thinner and their brains are easily hurt.
3.What can we conclude from the last paragraph?
A. Pregnant women should keep cell phones away.
B. People should use cell phones in the correct way.
C. If you are a child, you’d better text than make phone calls.
D. When you use a cell phone, use a wired headset or the phone’s speaker.
4.What does the passage mainly talk about?
A. Be careful when using cell phones.
B. Don’t hold your cell phone against your ear.
C. Rats exposed to radiation have damaged DNA in their brains.
D. Low-energy radiation could damage cells that could lead to cancer.
高一英语阅读理解中等难度题查看答案及解析
Cell Phones: Hang Up or Keep Talking
Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one.1. They find that the phones are more than a means of communication – having mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. Mobile phone companies are worried about the negative publicity(负面报道)of such ideas. 2.
On the other hand, signs of change in the issues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at a young age because of serious memory loss. 3. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years.
4. The answer is radiation(辐射). High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.
As the discussion about the safety continues, it appears that it’s best to use mobile phones less often.
5. Use your mobile phone only when you really need it. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it’s wise not to use your mobile phone too often.
A. They say that there is no proof that mobile phones are bad for your health.
B. What do the doctors worry about?
C. In many countries, cell phones are very popular with young people.
D. Use your regular phone if you want to talk for a long time.
E. He couldn’t remember even simple tasks.
F. They will possibly affect their benefits.
G. What is it that makes mobile phones potentially harmful?
高一英语七选五中等难度题查看答案及解析
Cell Phones: Hang Up or Keep Talking
Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one.1. They find that the phones are more than a means of communication – having mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. Mobile phone companies are worried about the negative publicity(负面报道)of such ideas. 2.
On the other hand, signs of change in the issues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at a young age because of serious memory loss. 3. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years.
4. The answer is radiation(辐射). High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.
As the discussion about the safety continues, it appears that it’s best to use mobile phones less often.
5. Use your mobile phone only when you really need it. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it’s wise not to use your mobile phone too often.
A. They say that there is no proof that mobile phones are bad for your health.
B. What do the doctors worry about?
C. In many countries, cell phones are very popular with young people.
D. Use your regular phone if you want to talk for a long time.
E. He couldn’t remember even simple tasks.
F. They will possibly affect their benefits.
G. What is it that makes mobile phones potentially harmful?
高一英语七选五中等难度题查看答案及解析
Teenagers who talk on the cell phone a lot, and hold their phones up to their right ears, score worse on one type of memory test. That’s the finding of a new study. That memory impairment might be one side effect of the radiation (放射线) that phones use to keep us connected while we’re on the go.
Nearly 700 Swiss teens took part in a test of figural memory. This type helps us remember abstract symbols and shapes, explains Milena Foerster. The teens took memory tests twice, one year apart. Each time, they had one minute to remember 13 pairs of abstract shapes. Then they were shown one item from each pair and asked to match it with one of the five choices. The study volunteers also took a test of verbal memory. That’s the ability to remember words. The two memory tests are part of an intelligence test. The researchers also surveyed the teens on how they use cell phones. And they got call records from phone companies. The researchers used those records to figure out how long the teens were using their phones. This allowed the researchers to work out how big radiation exposure (接触) each person could have got while talking.
A phone user’s exposure to the radiation can differ widely. Some teens talk on their phones more than others. People also hold their phones differently. If the phone is close to the ear, more radiation may enter the body, Foerster notes. Even the type of network signal that a phone uses can matter. Much of Switzerland was using an older “second-generation” type of cell phone networks, the study reports. Many phone carriers (通讯公司) have moved away from such networks. And more companies plan to update their networks within the next few years.
The teens’ scores in the figural memory tests were roughly the same from one year to the next. But those who normally held their phones near the right ears, and who were also exposed to higher levels of radiation, scored a little bit worse after a year. No group of teens showed big changes on the verbal memory test. Why might one type of memory be linked to cell phone use, but not another? Foerster thinks it could have to do with where different memory centers sit in the brain. The site that deals with the ability to remember shapes is near the right ear.
1.The underlined word “impairment” in Paragraph 1 most probably mean “________”.
A.application. B.loss.
C.damage. D.improvement.
2.According to Paragraph 2, we can learn that ______________________.
A.Researchers paid little attention to the teens’ habits of using phones.
B.The teens needed to report the average time spent on their phones.
C.The teens took two types of memory tests four times in total.
D.The teens’ ability of remembering words is shown in figural memory test.
3.What can we infer from Paragraph 3?
A.How people hold their phones has no effect on their bodies.
B.Phone users can make more money with new networks.
C.The cell phone network type has little to do with the cell phone use.
D.Radiation levels are affected by the cell phone network types.
4.What might be the best title for the text?
A.Cell phone use and safety warnings .
B.Teen’s cell phone use linked to memory problems.
C.Dangerous levels of cell phone use among teens.
D.Facts about cell phone use at school.
高一英语阅读理解中等难度题查看答案及解析
—May I use your cell phone right now ?
—_______. I am not using it now.
A.Go ahead B. That’s right C. That’s the point D. No, you can’t
高一英语单项填空简单题查看答案及解析
Ad 1: Lost Cell Phone
Unluckily, I lost my cell Phone in Midtown on Friday night. It had a blue green cover on it. There are many pictures of my son in it, and I’m heartbroken. Please return, no questions asked. Reward. Reply to: [email protected] org
Ad 2: Do you need a babysitter that you can trust?
My name is Tina. I am a responsible babysitter that you can trust. If you are looking for someone dependable and affordable I am that person! I HAVE MORE THAN 30 YEARS OF EXPERIENCE (including disabled children)! I am a retired Home Health Aid and absolutely (绝对)love children. I work with my sister Iris who has also more than 20 years’ experience as a teacher’s assistant. WE LOOK FORWARD TO MEETING YOU! Available 24 hours and flexible(灵活的)with fees! I am fully bilingual—Spanish/English. Please email me or call 712-867-7688.
Ad 3: I BABYSIT ONLY AT MY HOME
I accept children from all ages. Fee starts from $100~$150 a week depending on the hours. I am very flexible and my fee can change. Feel free to contact me via email or on my cell phone 566671873 and we can work something out.
Ad 4: Part-time Chinese Babysitter Wanted
Part-time Chinese speaking babysitter needed to assist with one-year-old twins and to perform some light housework as needed. Assistance needed Fridays and occasional(偶尔) weekends. Please provide your salary expectation. College students are welcome to apply.
Reply to: [email protected] org
1.If you want to send your kids to the babysitter’s home, you can find one in _______ .
A. Ad 1 B. Ad 2
C. Ad 3 D. Ad 4
2.What do we know about Tina?
A. She can speak two languages.
B. She lives alone now.
C. She takes care of children over 3.
D. She used to be a teacher’s assistant.
3.An applicant accepted by Ad 4 will have to _______ .
A. be able to speak two languages
B. be a college graduate
C. work every weekend
D. look after two children
4.Who posted the lost and found information?
A. A mother. B. A kind woman.
C. A heartbroken girl. D. A parent.
高一英语阅读理解简单题查看答案及解析
---Joan, what _______ in your hand ?
---Look! It’s a birthday gift for my grandma.
A. are you holding B. had you held C. do you hold D. will you hold
高一英语单项填空简单题查看答案及解析
If you find yourself constantly checking your cell phone, you may have a problem with
overuse of cell phone. 1. Here are four tips on how to create better phone habits.
1. Put your phone away an hour before you go to sleep. Staring at a screen right before
you try to go to sleep is going to make it more difficult to fall asleep. 2. Don’t try to
sleep with it right next to your head because you will spend more time focused on who might
be texting you than sleeping.
2. Carry your phone in your bag or pocket. When you take your phone with you, don’t
carry it in your hand. 3.This is especially important when you drive. Make sure your
phone is hidden away when you drive so you are not tempted to look at it and text.
3. 4. Think of the best times of the day for you to not be on your phone texting
and make it a “no phone time”. Turn your phone completely off and put it away somewhere
where you can’t get to it for a few hours. Forcing yourself to do this daily will help train your
brain to not get anxious when you are not on your phone.
4. Pretend like your cell phone is a home phone. 5. Try pretending like your cell
phone is a landline phone. Place it in one spot in your house and always leave it there and
only use it there, instead of taking it with you everywhere you go.
A. An hour before you go to sleep, text anyone you are talking to that you are going to sleep.
B. Cell phones are an annoying invention.
C. Have set times where you are away from your phone.
D. Turn off your cell phone before you leave your home.
E. Probably one of the major reasons you are addicted to (上瘾)texting is because you can carry your phone with you anywhere.
F. It can lead to reduced quality of personal relationships and lack of productivity in daily life.
G. Put your phone somewhere where you can’t see it.
高一英语七选五中等难度题查看答案及解析
阅读下面短文,根据所给情节进行续写,使之构成一个完整的故事。
In my culture, it 's not accepted or normal to go against my parents' wishes. I belong to a small and native community in the Oaxaca region of southern Mexico. We' ve lived here for centuries, and my family has been growing cotton for as long as anyone can remember.
When I was small, I had a lot of work to do. My father was sick and we were poor, so my sister and I would get up very earlier every morning to prepare food for the whole family. After school we would run home quickly to help do housework. On weekends, I would go to the village market to sell our cotton. Every time I sold something, it was good news for the whole family.
When I became a teenager, I wanted to study to become a secretary. By Working in an office I would be able to earn more money, which would be good for my family. I knew I was smart and that I would do a good job, but my parents refused to let me study. I listened to them and followed their advice in order not to make them unhappy.
Years later, some students from California came to our village. They were organizing an educational workshop for local people. We would learn new things and technology about growing cotton, and have the chance to network. This was a good chance for me to learn something new and useful. Of course I was willing to take part in it, but my parents said no again this time.
I have wonderful and generous parents, who are kind to everybody around them. Even when our family could hardly afford food, they would welcome guests with coffee and cookies. I knew they refused me because they wanted the best for me. I knew they were worried about me being away from them, but I knew they were wrong. Attending this workshop would be good for our family. I would be able to learn something new and useful, and our business would grow much faster than it could.
注意:
1.所续写短文的词数应为150左右;
2.至少使用5个短文中标有下划线的关键词语
3.续写部分分为两段,每段的开头语已为你写好;
4.续写完成后,请用下划线标出你所使用的关键词语。
Paragraph 1:
Therefore, I put my foot down and decided to go.
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Paragraph 2:
Now I no longer live together with my parents,but I work with them every day.
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
高一英语读后续写困难题查看答案及解析
When you buy a T-shirt, or a fur coat in a store, it often carries a label (标签),telling who made it or from which store it was bought . Indeed, some labels show the dress is famous and it is very expensive, so buyers secretly wish they might be carried forever. On the other hand, buyers who deal with the cheapest products would be pleased to do away with labels entirely.
However, there is another label more important than the one showing from which store the dress was bought. When a person buys a fur coat, or a jacket from a store, a label telling what the product is made of should be carried on it.
This label is required by law. Besides telling what the product on show is made of, the label should be in clear English and be where one can find it easily. The information on the label must be the truth.
The reason for this label is that most buyers today aren’t expert enough to know exactly what kind of fur or material they buy. The buyer must believe in the store that sells the products or in what the labels say.
56. The passage is mainly about_________.
A. some knowledge of clothing labels
B. some advice on how to get dressed
C. some advice on buying clothes
D. some knowledge of the quality of clothes
57. According to the passage, from a label we can know all of the following EXCEPT_________.
A. who made the clothes B. where one bought the clothes
C. how much the clothes cost D. what material the clothes are made of
58. The law requires that a product should carry a _________.
A. clean label B. clear label C. white label D. secret label
59. The author probably thinks that_________.
A. all buyers want their clothes to wear labels forever
B. many buyers depend on labels when buying clothes
C. most stores don’t sell clothes with labels
D. most labels don’t tell buyers the truth
高一英语阅读理解简单题查看答案及解析