题目
题型:不详难度:来源:
RTC.A. an organization which advises the aviation (航空 )industry, has suggested that all airlines ban such devices from being used during "critical" stages of flight particularly take- off and landing. Some experts have gone further, calling for a total ban during all flights .Cur- rently , rules on using these devices are left up to individual airlines. And although some air- lines prevent passengers from using such equipment during take-off and landing, most are un- willing to carry out a total ban, given that many passengers want to work during flight.
The difficulty is predicting how electromagnetic fields might affect an aircraft"s computers. Experts know that portable devices send out radiation which affects those wavelengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory. they have no way of knowing whether the interference might be. dangerous or not.
The fact that aircraft may be fragile to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can "t hear the instructions to turn off his radio because the music"s too loud.
小题1:What is said about the over 100 aircraft incidents in the past 16 years?
A.They may have been caused by the damage to-the radio systems. |
B.They may have taken place during take-off and landing. |
C.They were proved to have been caused by the passengers portable computers. |
D.They were suspected to have resulted from electromagnetic interference. |
A.Because it is extremely dangerous to conduct such research on an airplane. |
B.Because it remains a mystery what wavelengths are liable to be interfered with. |
C.Because research scientists have not been able to produce the same effects in labs. |
D.Because experts lack adequate equipment to do such research. |
A.they don"t believe there is such a danger as radio interference |
B.the harmful effect of electromagnetic interference is yet to be proved |
C.most passengers refused to take a plane ,which bans the use of radio and cassette players |
D.they have other effective safety measures to fall back on |
A.a new rule for all airlines |
B.the disadvantages of electronic devices |
C.a possible cause of aircraft incidents |
D.effective safety measures for air flight |
答案
小题1:D
小题2:C
小题3:B
小题4:C
解析
试题分析:这篇文章是一篇科普类,介绍了飞机事故的一种可能成因,即便携式电子设备所造成的影响。
小题1:细节理解题:依据文章第一段第二句in the last 16 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference。故选D。
小题2:细节题:依据第三段最后一句But, because they have not been able to reproduce these effects in a laboratory. they have no way of knowing whether the interference might be. dangerous or not.可知选C选项,故选C。
小题3:推理判断题:依据文章第三段可知The difficulty is predicting how electromagnetic fields might affect an aircraft"s computers.可知,答案选B。A、C、D三个选项明显在文章中没提到。故选B。
小题4:主旨大意题:通读全文可知,本文在讨论便携式电子设备可能对航空事故的影响。故选C。
核心考点
试题【The biggest danger facing airlines nowadays may not be a terrorist with a gun, b】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
That might seem an extraordinary act of selflessness for someone turning 20. But there’s increasing evidence that commitment to community service is becoming much more ordinary to today’s young adults.
“Young adults are doing more volunteer service than in any point in history,’’ said Scott Seider, an assistant professor of education at Boston University who studies the civic development of young adults.
At Harvard, the Winthrop Street Homeless Shelter is one of 86 social service programs associated with the Phillips Brooks House Association, which is a student-run nonprofit organization. Students can work with deaf children, bring pets to nursing homes, and prepare Chinese students to become US citizens, and so on.
Volunteerism develops well outside of colleges, too. Applications to AmeriCorps have risen to a very high level, jumping from 91,399 in 2008 to 258,829 in 2010. City Year, which puts young people in high-poverty schools as tutors and mentors for at-risk students, has had a 140 percent increase in applications since its 2007-2008 service year. Citizen Schools, which uses volunteers to work with students in middle schools, has had a 28 percent jump in applicants between 2008 and 2009.
“Most of my friends know it’s their duty to give back before they settle down,’’ said Samantha Wolf, a 23-year-old Boston University graduate serving with City Year in a Mattapan school.
City Year corps member Antonio Gutierrez, 22, graduated last year from Union College in Schenectady, N.Y., and is applying for admission to law schools, but this year he is tutoring and mentoring students at the Blackstone Elementary School in the South End.
“I grew up in similar circumstances,’’ said Gutierrez, who said he was a weak student until enrichment programs changed his academic trajectory (轨迹). Raised by a single mother in low-income housing across the street from City Year’s South End Headquarters, he used to watch the red-jacketed corps members come and go, and decided to become one someday.
小题1:We learn from what Scott Seider says in Paragraph 3 that young people today .
A.study harder than before |
B.do more volunteering than ever before |
C.don’t care much about others |
D.like to find jobs in their communities |
A.It helps to find jobs for college students. |
B.It offers shelters to the homeless people. |
C.It helps to build schools for poor students. |
D.It engages young people to teach at high-poverty schools. |
A.He wants to give back as a volunteer. |
B.He has always been an excellent student. |
C.He never expected to become a volunteer. |
D.He now works as a teacher. |
A.Volunteering spirit has disappeared |
B.How to become a college student |
C.College students learn to give back |
D.The real life of young adults today |
Administrative assistants welcome students at the beginning of the day and answer a large number of questions. When an assistant remembers a student’s name or even something special about that student, it communicates to him that he is cared for. The assistant can also give that extra encouragement for a student to make better choices, especially when they are visiting the principal’s office.
Cafeteria workers have a short period of time to interact with students, but can make a big difference as well. Beyond meeting nutritional needs, cafeteria workers may also on occasion meet the emotional needs of the students they serve. Students benefit from positive interaction with adults, and cafeteria workers may give that extra bit of encouragement that a child needs.
Custodians (管理人员) are often underappreciated for all that they give to schools. They have to be knowledgeable about everything from cleaning to fixing the most intricate (复杂的) tools. They get to school early in the morning before teachers arrive and lock up late at night after the last student has left from the after-school event. They also make sure teachers are equipped with the necessary items and prepare the rooms so that they are ready for learning. A great custodian also gives that kind word or extra smile to that student who needs it most.
小题1:If an assistant remembers a student’s name, the student will feel that .
A.he is cared for |
B.he is special |
C.he has done something wrong |
D.he has made progress in study |
A.It’s enough for them to cook for the students. |
B.It’s hard for them to interact with the students. |
C.They can also meet the emotional needs of the students. |
D.They have the most interaction with students at school. |
A.custodians play the least important role in a school |
B.the work of custodians often goes unnoticed |
C.custodians should be more serious with students |
D.custodians’ work is always appreciated at school |
A.Disappointed. | B.Appreciative. |
C.Dissatisfied. | D.Doubtful. |
“There is a growing population of elderly people, and there are statistics to show that more and more of them are going to live alone in the home,” said Johann Siau, a senior lecturer at the University of Hertfordshire in the U.K., who was leading the InterHome project.
The system was originally designed to provide remote access (远程访问) to a house so owners could be more energy-efficient. In a small type of the system, set-in controller devices connect securely to the Internet. The owner can then monitor them with a cell phone or computer. User feedback helps the system adapt to routines, saving on electricity.
While thinking about responding to user behavior and an increasingly elderly population, the researchers decided to add wristband (手腕带) technology that senses important organs of the body such as body temperature and pulse, Siau said. “If someone were to fall, it would detect the fall and it would immediately start the monitor of the pulse to see if the person has gone into shock (休克),” he said.
The wristband communicates with the home system wirelessly. Data from the band can be securely transmitted to the home network and accessed by authorized users. “We’re working on trying to reduce it to a level where it could potentially be a wrist-sized product,” Siau said.
But he warned that the technology presented new challenges. “When you start using that on a larger scale, you have issues of privacy or security,” he said. Siau said the InterHome home system isn’t intended to invade privacy. “We’re thinking about the elderly people who are living alone with no one looking after them,” he said. “Hopefully this will be able to decrease some concerns and possibly save a few lives.”
小题1:The system was first designed for a house owner to .
A.keep watch on his house |
B.keep his house safe |
C.monitor the elderly people inside |
D.save electricity |
A.sense important organs of a person |
B.keep an old man from falling |
C.get the medical information of a sick person |
D.record a person’s daily activities |
A.more sensitive |
B.be connected with the Internet |
C.available for common people |
D.suitable to wear on the wrist |
A.The wristband can be large and expensive. |
B.The wristband will get false information of a person. |
C.It will not be used in the proper way. |
D.It will bring inconvenience to the old people. |
Before you think your children’s friends could never lead one another astray (误入歧途的), think again. A child may experience an event that has caused overwhelming stress or may have problems at home or school, which causes negative behavior. Negative influences of a child’s friends can come without warning.
“Parents who ask their children where they are going, who they are going with and request a meeting with their children’s friends and the friends’ parents have already taken the first step,” says Mara Berkley, family therapist and professor at Bristol University in Rhode Island.
Lynn Rexroat of Chillicothe, Illinois, uses this method to keep tabs on her children. “My oldest son knows that in order for him to go anywhere with a friend, especially one I haven’t met before, I have to speak with that friend’s parent to make sure the arrangements are agreeable with us both,” she says. “I don’t interrogate (质问) them by asking about their private life. I just want to know that the parents of the other child know what the boys are planning to do. I feel that by my wanting to know I am protecting my son.”
When a parent suspects that their child is hanging out with “the wrong crowd”, the last thing on their mind should be discipline. Instead, Berkley says a parent should be more interested in finding out the reasons behind the behaviors and the child’s choice to keep company with these types of friends.
小题1:We can infer from the second paragraph that .
A.two children usually go astray together |
B.a child can be negatively influenced only when he meets problems |
C.a child can easily go astray under the influence of a friend |
D.parents know exactly when a child is negatively influenced |
A.should track him secretly | B.should not ask him |
C.can stop him going out | D.do something to interfere |
A.She questions his son directly. |
B.She meets his son’s friends herself. |
C.She makes arrangements with the parents of his son’s friends. |
D.She communicates with the parents of his son’s friends. |
A.watch over | B.win over | C.bring back | D.take control of |
Kidget, as the name suggests, is a combination of two words – kid and gadget. This kid-friendly gadget has various uses. When your child is in a mood to read, it takes the form of a storybook. When the mood is to draw and color this wonder gadget turns into a perfect canvas (画布). Your child can freely give color to all his/her imaginations. Should he or she wish to have some fun, see this device change into a musical instrument. You too would enjoy doing activities with your loved one using this gadget. This touch screen device will definitely prove to be an ideal friend.
As many parents agree, in this age of technological advancements it is much easier to introduce children to new gadgets than adults. While many adults refrain (克制) from trying out something new, kids are more than prepared to take the leap. Keeping this fact in mind, Kidget is the perfect gift for the child of the 21st century. You will be surprised to see how fast your little one gets acquainted with the device. You might even find yourself lagging (落后) behind at times.
Kidget has another hidden advantage. It helps take the load off young shoulders. With three things rolled into one, a child has much less books, stationary items and related goods to carry. It comes with a promise to make life simpler for kids. Not only is it simple to use but also easy to carry along. The stylish protective case comes with a belt attached to it. Children up to 14 years of age, the targeted audience, enjoy the freedom that comes with it.
小题1:The Kidget probably can’t serve as a ______.
A.storybook | B.perfect canvas |
C.musical instrument | D.television |
A.has many functions |
B.is only suitable for kids |
C.can make kids addicted if not properly used |
D.can change its shape and color |
A.it can be put into a schoolbag |
B.children can carry much less with it |
C.it has a stylish protective case |
D.it contains all the textbooks |
A.has both advantages and disadvantages |
B.hasn’t been put into use |
C.needs to be further improved |
D.is a perfect gift for kids |
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