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Using a mobile phone before going to bed can damage your health, according to a major study.
It says that radiation from the mobile phone can cause insomnia(失眠症) and headaches as well as cutting the time spent in deep sleep. Failing to get enough sleep can lead to depression, lack of concentration and personality changes. In teenagers and young children, lack of sleep can result in attention disorders and poor grades.
The research showed that using mobile phones before bed causes people to take longer to reach the deeper stages of sleep and to spend less time in them.
Deep sleep is important as it is the time when the body rejuvenates(更新) cells and repairs damage suffered during the day. Scientists found that using mobile phones an hour before sleep affects it. In the study scientists examined the sleep patterns of 36 women and 35 men aged 18 to 45. Some were exposed to radiation that is similar to what a person receives when using a mobile phone. The others received none. The results are as follows: The first group took longer to enter the first of the deeper stages of sleep and spent less time in the deepest one. However, the second group was opposite.
The findings will shock many parents. Many parents are always worried about their children’s health. But they didn’t have a better way to persuade them not to use a mobile phone.
1.The passage mainly tells us that ________.
A. deep sleep is good for your health
B. using a mobile phone before sleep can damage your health
C. different people have different sleep patterns
D. long sleep can renew cells
2.The underlined word “ it”refers to ________.
A. people’s body B. deep sleep
C. a sleep pattern D. a day
3.Which of the following is NOT mentioned in the passage?
A. Deep sleep is a good time for the body to repair damage suffered during the day
B. The study examined the sleep patterns of about 70 people.
C. The findings shocked many teachers and teenagers.
D. Using mobile phones before bed causes people to take longer time to enter the deep sleep.
4.We can infer from the passage that _________.
A. the lack of sleep can lead to children’s excitement
B. radiation from the mobile phone can cause parents’ worries
C. many children use mobile phones before sleep
D. using a mobile phone before sleep doesn’t harm the aged
难度: 中等查看答案及解析
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Big Bubbles
We all love bubbles. They float through the air like little glass balls, shining with colors and light. You can make bubbles with dishwashing soap and a paper cup. Soap makes the water stick together in a round shape. The bubbles you blow will be really big!
Here’s what you will need:
• A large bowl • A spoon • 4 cups of water
• 5 tablespoons of dishwashing soap
• A pair of scissors
• A paper cup
Follow these steps(步骤) to make big bubbles:
1. Fill the bowl with the water.
2. Add the dishwashing soap into the water and mix them together.
3. Cut a small hole in the bottom of the paper cup. This is the hole that you will blow through.
4. Dip the top rim of the cup into the soapy water. Slowly lift the cup out of the bowl. There should be a thin “window” of soapy water filling the open space of the cup.
5. Slowly put your mouth up to the hole in the bottom of the cup. Gently blow air through the hole. A big bubble will rise into the air! For a party, you can make a bowl of soapy water and a paper cup bubble-blower for each friend. If your friends do step 4 and 5 again and again, just think of how many bubbles you can make together!
1.What is the passage mainly about?
A.People can make bubble-blowers. B.Bubbles are shining with colors.
C.It is easy to make big bubbles. D.Everyone loves big bubbles.
2.Which step tells you to add dishwashing soap into the water?
A.Step 1. B.Step 2. C.Step 3. D.Step 4.
3.To blow more bubbles, which two steps should you do again?
A.1 and 2. B.2 and 3. C.3 and 4. D.4 and 5.
难度: 简单查看答案及解析
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It warmed my heart today to walk into the Thirsty Camel downtown in the Thanksgiving Day, for a quick lunch before a haircut and library trip. Ilan, a food shop owner, said that he was refusing to take money today because it was Buy Nothing Day. To increase awareness(意识) of the stranger’s over-spending nature of our society, Ilan suggested a trade（交易）for food today. He simply asked that you offer something of equal personal value for the meal you received.
At first I was really uncomfortable, wondering if it would be fair(公平的) to exchange a yet to be determined “I Owe You” (IOU) for food? What could I give him of equal value? After all, his food is the best in the town!
We ended up writing our IOU’s with promises in a lot of ways if he needs it, such as a book, some paintings and the offer of work. I think the idea isn’t that the trade is “equal” so much as the importance of the kind of transaction. We put thought into our offer and we had an even greater understanding for the meals we ate.
We don’t buy a lot, especially at this upcoming time of year. We don’t give gifts at all in fact. The holiday time is spent enjoying each other’s company and doing things together with family and friends. This is what seems most sensible（明智的）.
Ilan is a good person. We are all lucky to have someone like this in our community.
1.Ilan did not take any money that day in order to______.
A.to increase awareness of people’s over spending
B.have a quick lunch before a haircut and library trip
C.trade for something for nothing
D.buy nothing that day to save some money
2.For the meal, the author finally offered Ilan______.
A.some promises B.a book
C.some paintings D.work in different ways
3.Which of the following is closest in meaning to the underlined word “transaction”?
A.transport B.trade C.meal D.giving
4.What is the author’s attitude to Buy Nothing Day?
A.Disagreeable B.Meaningless. C.Doubtful. D.Supportive.
难度: 中等查看答案及解析
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Who made the ABC song? Some people say a man named Charles Bradlee made the song. He was the first person to say he owned it. That was in 1834. Bradlee called the song “The Schoolmaster”. A schoolmaster is an old name for a teacher. No one knows where it came from. But we do have some clues.
Sounds Like Another Song
The ABC song sounds the same as “Twinkle Twinkle Little Star”. It has the same tune, or music. It sounds like “Baa Baa Black Sheep”, too. Try singing each song. Sing them in a row. You can hear for yourself! The tune was first printed in 1761. It didn’t have any words. No one knows who wrote it. Later, a woman wrote the words for “Twinkle Twinkle Little Star”. Her name was Jane Taylor. She lived in England. She wrote the words in 1806. Mozart was a very famous composer. He wrote a piece of music in 1785. It sounds a lot like the ABC song!
We Learn Better From Songs
When the ABC song first became popular, few children went to school. Most people did not learn how to read. They did not learn how to write, either. As time went on, this changed. More people needed to know how to read and write. More children started learning the ABC song. It helped them remember the letters.
Why do we sing the ABC song? We could just read it quietly. Or we could say it without singing. Why is the song partly important? The answer is related to how we learn. Children have always leaned from grown-ups. But 200 year ago, most people couldn’t read or write. Children had to remember things. They could not write down what they learned. They could not read about it later. So it was important to remember. Songs helped people remember. People sang songs that told stories. They taught their children what they knew through songs.
So, no none really knows who made the ABC song. We do know that this song is popular today. Most children who learn to speak English will sing it. Then they will remember their letters!
1.How is the passage mainly developed?
A.By comparing. B.By listing facts.
C.By telling a story. D.By examining differences.
2.Who made the ABC song?
A.Charles Bradlee B.Jane Taylor.
C.Mozart. D.No one knows the answer exactly.
3.Which of the following is not true about the importance of songs?
A.Songs help children remember the letters.
B.Songs told stories.
C.People can teach what they know to children through songs.
D.Songs help people have a happy life.
4.Why the Question “Who made the ABC song?” is used in the beginning?
A.To test the readers. B.To show the song is important.
C.To introduce the topic. D.To analyze the cause and effect.
难度: 中等查看答案及解析