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3D printing technology may not be a new thing in some foreign countries. But in May this year, at Shenzhen Convention and Exhibition Center. Many visitors were attracted by a 3D printer.
The machine looks similar to an ordinary printer and can print a “statue” in about 90 minutes after scanning anything, including a person.
The printer prints layer by layer. For example, if we want to print a 30-cm-tall statue, the computer will calculate* the layers and print 460 layers in total*. It can also print people and clothes. You can stand for scanning for just about three minutes, and a statue will be finished about two hours. The cost for a statue of a man is about 1000yuan. The printer, which costs about 500,000yuan, is from the USA.
“We want to introduce this technology to people, and find more chances here.” said an engineer, “There is a company in USA that offers 3D printing services to people. Many people come to design their own thing. It is very cool. We hope that the printer will encourage more Chinese people to be more creative.”
1.A 3D printer_______.
A. is a common machine
B. prints layer by layer
C. can make clothes and people
D. is widely used in Shenzhen
2.How much should you pay if you want to have a statue of yourself printed?
A. 50,000yuan B. 1000yuan
C. 500,000yuan D. 100yuan
3.The engineer showed people the 3D printer to_______.
A. design new things
B. print statues for them
C. introduce this technology and find changes
D. calculate the layers
4.The best title for the passage is_______.
A. 3D printer made in Shenzhen
B. 3D printing looks for bigger market
C. 3D printing services in the USA
D. Design your own statue
九年级英语阅读理解中等难度题查看答案及解析
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—Three-D printing technology could be used to build a house in less than 24 hours.
-- It amazing. It’s my first time to get to know the news.
A. looks B. smells C. sounds D. tastes
九年级英语单项填空中等难度题查看答案及解析
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---Three-D printing technology could be used to build a house in less than 24 hours.
---It amazing. It's my first time to get to know the news. (2015•镇江市)
A. looks B. smells C. sounds D. tastes
九年级英语单选题中等难度题查看答案及解析
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1Smoking is not allowed in public places since May 1st. It may be a good chance for some people to ______ smoking.
A. put up B. give up C. pick up D. look up
九年级英语单项填空困难题查看答案及解析
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Smoking is not allowed in public places since May 1st. It may be a good chance for some people to ______ smoking.
A. put up B. give up C. pick up D. look up
九年级英语单项填空中等难度题查看答案及解析
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Smoking is not allowed in public places since May 1st. It may be a good chance for some people to ______ smoking.
A. put up B. give up
C. pick up D. look up
九年级英语单项填空简单题查看答案及解析
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Money, jewels and important documents may not be the only valuables placed in banks these days. Some mothers store their breast milk (母乳) in banks.
There are ten breast milk banks across the United States, where mothers can donate their extra milk for other women’s babies.
Experts say breast milk is the best food for babies. The World Health Organization says it is the only food babies should get during the first six months, in most cases. It is especially important for babies born too early. Sometimes these premature babies must stay in the hospital for many weeks.
James Cameron is a doctor who treats newborns at Lutheran Children’s Hospital in Fort Wayne, Indiana. He says breast milk is almost like medicine. Doctor James Cameron says, “The fact is that there are so many different proteins(蛋白质) and specialized sugars in the breast milk that the mom’s able to make that help provide immunity (免疫力). It’s very important for the health of the newborn.”
Lucy Baur lives near Fort Wayne. She breastfed both her children and always had more milk than they needed. She wanted to donate to the Indiana Mothers Milk Bank in Indianapolis. But freezing and shipping milk can be costly. Then, a donor station opened near her home.
Milk donations in the United States work like this. Donors must be willing to provide almost three liters of breast milk. They freeze the milk and take it to the station. There, employees warm the milk and mix it with other mothers’ milk. Then, the milk is heated to kill bacteria. After that, the technicians test samples of all the milk to make sure it is safe and healthful. The milk is re-frozen
and sent to the main milk bank. The milk bank transports the milk to hospitals to feed premature or sick babies.
Donors are tested for diseases before any milk is accepted. They are not permitted to smoke tobacco, use illegal drugs or drink too much alcohol.
1. According to the passage, ________ can also be stored in banks except money, jewels and important documents.
A. Notes.
B. Diamonds.
C. Valuable papers.
D. Breast milk.
2.From the text we learn ________.
A. Lucy Baur wanted to donate her milk to the donor station near her home
B. the milk is frozen and sent to the milk station after killing bacteria
C. the milk bank transports the milk to babies’ home to feed them
D. James Cameron is a doctor who feeds the babies on the milk in the milk station
3. The breast milk is important for newborns because ________.
A. only it can stop babies from developing diseases
B. it contains rich nutrients (营养) babies need
C. it is the only food suitable for babies
D. it benefits babies as the best medicine
4.Who is allowed to donate her extra milk of the following women?
A. A heavy smoker. B. A heavy drinker.
C. A fruit lover. D. A drug user.
5.The purpose of setting up breast milk banks is to ________.
A. store extra fresh milk for some school children
B. provide milk to the children who go hungry
C. help other mothers donate milk to their own babies
D. offer breast milk to early born and unhealthy babies
九年级英语阅读理解中等难度题查看答案及解析
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Money, jewels and important documents may not be the only valuables placed in banks these days. Some mothers store their breast milk (母乳) in banks.
There are ten breast milk banks across the United States, where mothers can donate their extra milk for other women’s babies.
Experts say breast milk is the best food for babies. The World Health Organization says it is the only food babies should get during the first six months of life, in most cases. Breast milk is especially important for babies born too early. Sometimes these premature babies must stay in the hospital for many weeks.
James Cameron is a doctor who treats newborns at Lutheran Children’s Hospital in Fort Wayne, Indiana. He says breast milk is almost like medicine. Doctor James Cameron says, “The fact is that there are so many different proteins and specialized sugars in the breast milk that the mom’s able to make that help provide immunity (免疫力). It’s very important for the health of the newborn.”
Lucy Baur lives near Fort Wayne. She breastfed both her children and always had more milk than they needed. She wanted to donate to the Indiana Mothers Milk Bank in Indianapolis. But freezing and shipping milk can be costly. Then, a donor station opened near her home.
Milk donations in the United States work like this. Donors must be willing to provide almost three liters of breast milk. They freeze the milk and take it to the station. There, employees warm the milk and mix it with other mothers’ milk. Then, the milk is heated to kill bacteria. After that, the technicians test samples of all the milk to make sure it is safe and healthful. The milk is re-frozen and sent to the main milk bank. The milk bank transports the milk to hospitals to feed premature or sick babies.
Donors are tested for diseases before any milk is accepted. They are not permitted to smoke tobacco, use illegal drugs or drink too much alcohol.
1.According to the passage, which thing can also be stored in banks except money, jewels and important documents?
A. Notes. B. Diamonds.
C. Valuable papers. D. Breast milk.
2.From the text we learn .
A. Lucy Baur wanted to donate her milk to the donor station near her home
B. the milk is frozen and sent to the milk station after killing bacteria
C. the milk bank transports the milk to babies’ home to feed them
D. James Cameron is a doctor who feeds the babies on the milk in the milk station
3.The breast milk is important for newborns because .
A. only it can stop babies from developing diseases
B. it contains rich nutrients (营养) babies need
C. it is the only food suitable for babies
D. it benefits babies as the best medicine
4.Who is allowed to donate her extra milk of the following women?
A. A heavy smoker. B. A heavy drinker.
C. A fruit lover. D. A drug user.
5.The purpose of setting up breast milk banks is to .
A. store extra fresh milk for some school children
B. provide milk to the children who go hungry
C. help other mothers donate milk to their own babies
D. offer breast milk to early born and unhealthy babies
九年级英语阅读理解中等难度题查看答案及解析
-
Money, jewels and important documents may not be the only valuables placed in banks these days. Some mothers store their breast milk (母乳) in banks.
There are ten breast milk banks across the United States, where mothers can donate their extra milk for other women’s babies.
Experts say breast milk is the best food for babies. The World Health Organization says it is the only food babies should get during the first six months of life, in most cases. Breast milk is especially important for babies born too early. Sometimes these premature babies must stay in the hospital for many weeks.
James Cameron is a doctor who treats newborns at Lutheran Children’s Hospital in Fort Wayne, Indiana. He says breast milk is almost like medicine. Doctor James Cameron says, “The fact is that there are so many different proteins and specialized sugars in the breast milk that the mom’s able to make that help provide immunity (免疫力). It’s very important for the health of the newborn.”
Lucy Baur lives near Fort Wayne. She breastfed both her children and always had more milk than they needed. She wanted to donate to the Indiana Mothers Milk Bank in Indianapolis. But freezing and shipping milk can be costly. Then, a donor station opened near her home.
Milk donations in the United States work like this. Donors must be willing to provide almost three liters of breast milk. They freeze the milk and take it to the station. There, employees warm the milk and mix it with other mothers’ milk. Then, the milk is heated to kill bacteria. After that, the technicians test samples of all the milk to make sure it is safe and healthful. The milk is re-frozen and sent to the main milk bank. The milk bank transports the milk to hospitals to feed premature or sick babies.
Donors are tested for diseases before any milk is accepted. They are not permitted to smoke tobacco, use illegal drugs or drink too much alcohol.
1.According to the passage, which thing can also be stored in banks except money, jewels and important documents?
A．Notes. B．Diamonds. C．Valuable papers. D．Breast milk.
2.From the text we learn ________.
A．Lucy Baur wanted to donate her milk to the donor station near her home
B．the milk is frozen and sent to the milk station after killing bacteria
C．the milk bank transports the milk to babies’ home to feed them
D．James Cameron is a doctor who feeds the babies on the milk in the milk station
3. The breast milk is important for newborns because ________.
A．only it can stop babies from developing diseases
B．it contains rich nutrients (营养) babies need
C．it is the only food suitable for babies
D．it benefits babies as the best medicine
4. Who is allowed to donate her extra milk of the following women?
A．A heavy smoker. B．A heavy drinker.
C．A fruit lover. D．A drug user.
5.The purpose of setting up breast milk banks is to ________.
A．store extra fresh milk for some school children
B．provide milk to the children who go hungry
C．help other mothers donate milk to their own babies
D．offer breast milk to early born and unhealthy babies
九年级英语阅读理解中等难度题查看答案及解析
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A new study says the habit of sleeping in（睡懒觉）on weekends may not be such a good idea for your health.
36 healthy young men and women took part in the study. They were divided into three groups and were followed over 30 days.
The first group could sleep for nine hours each night for the 30 days. The second group had other only five hours of sleep every night. The third group had five hours on weekdays but was allowed to sleep as long as they wanted on the weekend. But on Monday, the third group was put back to the sleep schedule（周期）of only five hours a night.
The study showed that the first and the third groups ate more snacks after dinner and put on weight during the study, men much more than women.
What was surprising the scientists was the third group who slept in on weekends. "Even though people slept as much as they could, it was not enough," Dr. Wright said. "As soon as they went back to the short sleep schedules on Monday, the ability of their body to control blood sugar was badly affected." "Not only that, the result showed increased sensitivity to insulin（胰岛素）in both their muscles（肌肉）and their livers（肝脏）, the result wasn't found in other groups. The reason may be that their body clock had been changed.
1.How many groups were the people divided into in the study?
A.3 B.4 C.5 D.6
2.How long did the third group sleep everyday？
A.5 hours everyday.
B.9 hours everyday.
C.9 hours on weekdays and 5 hours on weekends.
D.5 hours on weekdays and sleep as long as they wanted on weekends.
3.From the study we know that __________.
A.women put on more weight than men
B.the sleep-deprived（睡眠不足的）people were more healthy
C.the second group didn't put on weight
D.women ate more snacks after dinner
4.What happened to the members in the third group?
A.Their blood sugar was badly affected.
B.They had enough sleep.
C.They didn't change their body clock.
D.They had increased sensitivity to insulin in hand.
5.What does the passage mainly tell us?
A.Sleeping is not important.
B.Sleeping too much on weekends may not be good for our health.
C.We can change our body clock as often as we can.
D.Adults don't need too much sleep.
九年级英语阅读单选困难题查看答案及解析