Millions of people travel by plane every single day. If you're planning on being one of them s...-无忧在线题库-无忧题库

Millions of people travel by plane every single day. If you're planning on being one of them soon, you might not be looking forward to the【C1】feeling air travel often leaves you with.
   Besides the airport crowds and stress, traveling at a high altitude has real effects on the body. Although the pressure of the cabin is【C2】to prevent altitude sickness, you could still【C3】sleepiness or a headache. The lower oxygen pressure found in an aircraft cabin is【C4】to that at 6,000-8,000 feet of altitude. A drop in oxygen pressure can cause headaches in certain【C5】. To help prevent headaches, drink plenty of water, and avoid alcohol and coffee.
   Airplane food might not really be as tasteless as you【C6】thought. The air you breathe in a plane dries out your mouth and nose, which can affect your sense of taste. Perception of sweet and salty foods dropped by almost 30 percent in a simulation of air travel. However, you can make your taste buds active again by drinking water. A dry mouth may【C7】taste sensitivity, but taste is restored by drinking fluids.
   Although in-flight infections【C8】in dry environments like airplanes, your risk of getting sick from an airplane is actually low because of the air【C9】used. Unless you're sitting next to someone who is coughing or sneezing, you shouldn't worry too much about getting sick. However, bacteria have been shown to live on cabin surfaces, so wash your hands【C10】.
   A) adjusted F) frequently K) reduce
   B) channels G) individuals L) renovated
   C) equivalent H) originally M) smooth
   D) experience I) particular N) thrive
   E) filters J) primarily O) unpleasant

问答题

2021-06-03 11:59:31

02170

参考答案：1【C1】标准答案：O知识点解析：[语法判断]空格前是定冠词the，后面是名词feeling，因此应填入形容词。[语义判断]空格所在句指出，如果你打算很快成为他们中的一员，你可能不会期待航空旅行经常给你留下的那种______的感觉。由此可知，你不会期待乘飞机带来的感受，而且下文也提到，乘飞机可能会导致昏昏欲睡、头疼等问题，因此空格处应填入含有贬义的形容词。在备选形容词中，只有unpleasant是贬义的，意为“使人不愉快的”，故本题答案为unpleasant。2【C2】标准答案：A知识点解析：[语法判断]空格前是系动词is，后面是不定式符号to，因此空格处应填入形容词或者动词的分词形式。[语义判断]空格所在部分指出，机舱的气压______预防高海拔不适。为了乘客的舒适，飞机在飞行时，机舱内的气压不能与外部气压相同，是需要调整的，因此空格处应填入含有“调整”意义的词，故答案为adjusted。3【C3】标准答案：D知识点解析：[语法判断]空格前有情态动词could，因此推断空格处应填入动词原形。[语义判断]sleepiness和headache都是人能感受到的，因此空格处应填入含有“感受”意义的动词原形，故答案为experience。填入空格处，表示你仍然能感到昏昏欲睡或头疼。4【C4】标准答案：C知识点解析：[语法判...

查看答案

科目：大学英语

学科：外国语言文学

感兴趣题目

Finally, some good news about airplane travel. If you are on a plane with a sick passenger, you are unlikely to get sick. That is the【C1】______of a new study that looked at how respiratory (呼吸道) viruses【C2】______on airplanes. Researchers found that only people who were seated in the same row as a passenger with the flu, for example—or one row in front of or behind that individual—had a high risk of catching the illness. All other passengers had only a very【C3】______chance of getting sick, according to the findings. Media reports have not necessarily presented【C4】______information about the risk of getting infected on an airplane in the past. Therefore, these new findings should help airplane passengers to feel less【C5】______to catching respiratory infections while traveling by air. Prior to the new study, little was known about the risks of getting【C6】______infected by common respiratory viruses, such as the flu or common cold, on an airplane, the researchers said. So, to【C7】______the risks of infection, the study team flew on 10 different【C8】______in the U. S. during the flu season. The researchers found that passengers sitting within two seats on【C9】______side of a person infected with the flu, as well as those sitting one row in front of or behind this individual, had about an 80 percent chance of getting sick. But other passengers were【C10】______safe from infection. They had a less than 3 percent chance of catching the flu. A) accurate F) explorations K) slim B) conclusion G) flights L) spread C) directly H) largely M) summit D) either I) nearby N) vividly E) evaluate J) respond O) vulnerable

When travelling overseas, do you buy water in plastic bottles or take your chances with tap water? Imagine you are wandering about on a Thai island or【C1】______the ruins of Angkor. It's hot so you grab a bottle of water from a local vendor. It's the safe thing to do, right? The bottle is【C2】______, and the label says "pure water". But maybe what's inside is not so【C3】______Would you still be drinking it if you knew that more than 90 percent of all bottled water sold around the world【C4】______microplastics? That's the conclusion of a recently【C5】______study, which analysed 259 bottles from 11 brands sold in nine countries,【C6】______an average of 325 plastic particles per litre of water. These microplastics included a【C7】______commonly known as PET and widely used in the manufacture of clothing and food and【C8】______containers. The study was conducted at the State University of New York on behalf of Orb Media, a journalism organisation. About a million bottles are bought every minute, not only by thirsty tourists but also by many of the 2.1 billion worldwide who live with unsafe drinking water. Confronted with this【C9】______, several bottled-water manufacturers including Nestle and Coca-Cola undertook their own studies using the same methodology. These studies showed that their water did contain microplastics, but far less than the Orb study suggested. Regardless, the World Health Organisation has launched a review into the【C10】______health risks of drinking water from plastic bottles. A) adequate F) instant K) released B) admiring G) liquid L) revealing C) contains H) modified M) sealed D) defending I) natural N) solves E) evidence J) potential O) substance

Have you ever used email to apologize to a colleague? Delivered a【C1】______to a subordinate (下属) with a voice-mail message? Flown by plane across the country just to deliver important news in person? The various communication options at our fingertips today can be good for【C2】______and productivity—and at the same time very troublesome. With so many ways to communicate, how should a manager choose the one that' s best—【C3】______when the message to be delivered is bad or unwelcome news for the recipient? We' ve【C4】______business communication consultants and etiquette (礼仪) experts to come up with the following guidelines for【C5】______using the alternative ways of delivering difficult messages. First of all, choose how personal you want to be. A face-to-face communication is the most【C6】______Other choices, in descending order of personalization, are: a real-time phone call, a voice-mail message, a handwritten note, a typewritten letter, and the most【C7】______is email. Some of these may change order according to the【C8】______situation or your own preferences: for example, a handwritten note might seem more personal than voice-mail. How do you decide on the best choice for the difficult message you've got to deliver? "My【C9】______concern is: How can I soften or civilize this message?" says etiquette expert Dana Casperson. " So when I apologize, I usually choose in-person first, or a phone conversation as my top alternative, and maybe a handwritten note next. Apologizing by email is something I now totally【C10】______"A) avoid I) rewardB) convenience J) silentC) effectively K) specificD) escape L) surveyedE) intimate M) unfriendlyF) particularly N) warningG) primary O) witnessed H) prompt

A few months ago, I was down with a terrible cold which ended in a persistent bad cough. No matter how many different【C1】______I tried, I still couldn' t get rid of the cough. Not only did it【C2】______my teaching but also my life as a whole. Then one day after class, a student came up to me and【C3】______traditional Chinese medicine. From her description, Chinese medicine sounded as if it had magic power that worked wonders. I was【C4】______because I knew so little about it and have never tried it before. Eventually, my cough got so much【C5】______that I couldn' t sleep at night, so I decided to give it a try. The Chinese doctor took my pulse and asked to see my tongue, both of which were new【C6】______to me because they are both nonexistent in Western medicine. Then the doctor gave me a scraping (刮) treatment known as " Gua Sha". I was a little【C7】______at first because he used a smooth edged tool to scrape the skin on my neck and shoulders. A few minutes later, the【C8】______strokes started to produce a relieving effect and my body and mind began to【C9】______deeper into relaxation. I didn' t feel any improvement in my condition in the first couple of days, but after a few more regular visits to the doctor, my cough started to【C10】______Then, within a matter of weeks, it was completely gone!A) deepen I) remediesB) experiences J) scaredC) hesitant K) sensitiveD) inconvenience L) sinkE) lessen M) temporaryF) licenses N) trembleG) pressured O) worse H) recommended

Millions die early from air pollution each year. Air pollution costs the global economy more than $5 trillion annually in welfare costs, with the most serious【C1】______occurring in the developing world. The figures include a number of costs【C2】______with air pollution. Lost income alone amounts to $225 billion a year. The report includes both indoor and outdoor air pollution. Indoor pollution, which includes【C3】______like home heating and cooking, has remained【C4】______over the past several decades despite advances in the area. Levels of outdoor pollution have grown rapidly along with rapid growth in industry and transportation. Director of Institute for Health Metrics and Evaluation Chris Murray【C5】______it as an " urgent call to action". "One of the risk factors for premature deaths is the air we breathe, over which individuals have little【C6】______," he said. The effects of air pollution are worst in the developing world, where in some places lost-labor income【C7】______nearly 1% of GDP. Around 9 in 10 people in low- and middle-income countries live in places where they【C8】______experience dangerous levels of outdoor air pollution. But the problem is not limited【C9】______to the developing world. Thousands die prematurely in the U. S. as a result of related illnesses. In many European countries, where diesel (柴油)【C10】______have become more common in recent years, that number reaches tens of thousands.A) ability I) exclusivelyB) associated J) innovatedC) consciously K) regularlyD) constant L) relatesE) control M) sourcesF) damage N) undermineG) described O) vehicles H) equals

Since the 1940s, southern California has had a reputation for smog. Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the United States for levels of【C1】______Gazing down on the city from the Getty Center, an art museum in the Santa Monica Mountains, one would find the view of the Pacific Ocean blurred by the haze (霾). Nor is the state' s bad air【C2】______to its south. Fresno, in the central valley, comes top of the list in America for year-round pollution. Residents' hearts and lungs are affected as a【C3】______. All of which, combined with California' s reputation as the home of technological【C4】______, makes the place ideal for developing and testing systems designed to monitor pollution in【C5】______And that is just what Aclima, a new firm in San Francisco, has been doing over the past few months. It has been trying out monitoring stations that are【C6】______to yield minute-to-minute maps of【C7】______air pollution. Such stations will also be able to keep an eye on what is happening inside buildings, including offices. To this end, Aclima has been【C8】______with Google' s Street View system. Davida Herzl, Aclima' s boss, says they have revealed pollution highs on days when San Francisco' s transit workers went on strike and the city' s【C9】______were forced to use their cars. Conversely, "cycle to work" days have done their job by【C10】______pollution lows. A) assisted I) inhabitants B) collaborating J) innovation C) consequence K) intended D) consumers L) outdoor E) creating M) pollutants F) detail N) restricted G) domestic O) sum H) frequently

Signs barring cell-phone use are a familiar sight to anyone who has ever sat in a hospital waiting room. But the【C1】______popularity of electronic medical records has forced hospital-based doctors to become【C2】______on computers throughout the day, and desktops—which keep doctors from bedsides— are【C3】______giving way to wireless devices. As clerical loads increased, "something had to【C4】______, and that was always face time with patients," says Dr. Bhakti Patel, a former chief resident in the University of Chicago's internal-medicine program. In fall 2010, she helped【C5】______a pilot project in Chicago to see if the iPad could improve working conditions and patient care. The experiment was so【C6】______that all internal-medicine residents at the university now get iPads when they begin the program. Johns Hopkins' internal-medicine program adopted the same【C7】______in 2011. Medical schools at Yale and Stanford now have paperless, iPad-based curriculums. "You'll want an iPad just so you can wear this" is the slogan for one of the new lab coats【C8】______with large pockets to accommodate tablet computers. A study of the University of Chicago iPad project found that patients got tests and【C9】______faster if they were cared for by iPad-equipped residents. Many patients also【C10】______a better understanding of the illnesses that landed them in the hospital in the first place.A)dependent I)policyB)designed J)prospectC)fast K)ratherD)flying L)reliableE)gained M)signalF)give N)successfulG)growing O)treatments H)launch

Physical activity does the body good, and there's growing evidence that it helps the brain too. Researchers in the Netherlands report that children who get more exercise, whether at school or on their own,【C1】______to have higher GPAs and better scores on standardized tests. In a【C2】______of 14 studies that looked at physical activity and academic【C3】______, investigators found that the more children moved, the better their grades were in school,【C4】______in the basic subjects of math, English and reading. The data will certainly fuel the ongoing debate over whether physical education classes should be cut as schools struggle to【C5】______on smaller budgets. The arguments against physical education have included concerns that gym time may be taking away from study time. With standardized test scores in the U. S.【C6】______in recent years, some administrators believe students need to spend more time in the classroom instead of on the playground. But as these findings show, exercise and academics may not be【C7】______exclusive. Physical activity can improve blood【C8】______to the brain, fueling memory, attention and creativity, which are【C9】______to learning. And exercise releases hormones that can improve【C10】______and relieve stress, which can also help learning. So while it may seem as if kids are just exercising their bodies when they're running around, they may actually be exercising their brains as well.A)attendance I)moodB)consequently J)mutuallyC)current K)particularlyD)depressing L)performanceE)dropping M)reviewF)essential N)surviveG)feasible O)tend H)flow

Many men and women have long bought into the idea that there are "male" and "female" brains, believing that explains just about every difference between the sexes. A new study【C1】______ that belief, questioning whether brains really can be distinguished by gender. In the study, Tel Aviv University researchers【C2】______ for sex differences throughout the entire human brain. And what did they find? Not much. Rather than offer evidence for【C3】______ brains as "male" or "female," research shows that brains fall into a wide range, with most people falling right in the middle. Daphna Joel, who led the study, said her research found that while there are some gender-based【C4】______ , many different types of brain can't always be distinguished by gender. While the "average" male and "average" female brains were【C5】______ different, you couldn't tell it by looking at individual brain scans. Only a small【C6】______ of people had "all-male" or "all-female" characteristics. Larry Cahill, an American neuroscientist(神经科学家), said the study is an important addition to a growing body of research questioning【C7】______ beliefs about gender and brain function. But he cautioned against concluding from this study that all brains are the same,【C8】______ of gender. "There's a mountain of evidence【C9】______ the importance of sex influences at all levels of brain function,"he told The Seattle Times. If anything, he said, the study【C10】______ that gender plays a very important role in the brain—"even when we are not clear exactly how. "A)abnormal I)regardlessB)applied J)searchedC)briefly K)similaritiesD)categorizing L)slightlyE)challenges M)suggestsF)figure N)tastesG)percentage O)traditional H)proving

The ocean is heating up. That's the conclusion of a new study that finds that Earth's oceans now【C1】______ heat at twice the rate they did 18 years ago. Around half of ocean heat intake since 1865 has taken place since 1997, researchers report online in Nature Climate Change. Warming waters are known to【C2】______ to coral bleaching(珊瑚白化)and they take up more space than cooler waters, raising sea【C3】______ . While the top of the ocean is well studied, its depths are more difficult to【C4】______ . The researchers gathered 150 years of ocean temperature data in order to get a better【C5】______ of heat absorption from surface to seabed. They gathered together temperature readings collected by everything from a 19th century【C6】______ of British naval ships to modern automated ocean probes. The extensive data sources,【C7】______ with computer simulations(计算机模拟), created a timeline of ocean temperature changes, including cooling from volcanic outbreaks and warming from fossil fuel【C8】______ . About 35 percent of the heat taken in by the oceans during the industrial era now resides at a【C9】______ of more than 700 meters, the researchers found. They say they're【C10】______ whether the deep-sea warming canceled out warming at the sea's surface.A)absorb I)heightsB)combined J)indifferentC)contribute K)levelsD)depth L)mixedE)emissions M)pictureF)excursion N)unsureG)explore O)voyageH)floor

When someone commits a criminal act, we always hope the punishment will match the offense. But when it comes to one of the cruelest crimes—animal fighting—things【C1】______ work out that way. Dog-fighting victims are【C2】______ and killed for profit and "sport," yet their criminal abusers often receive a【C3】______ sentence for causing a lifetime of pain. Roughly half of all federally-convicted animal fighters only get probation(缓刑). Some progress has been made in the prosecution(起诉)of animal fighters. But federal judges often rely heavily on the U. S. Sentencing Guidelines when they【C4】______ penalties, and in the case of animal fighting, those guidelines are outdated and extremely【C5】______ . The U. S. Sentencing Commission, which【C6】______ these sentencing guidelines, is revisiting them, proposing to raise the minimum sentence from 6-12 to 21 -27 months. This is a step in the right【C7】______ , but we'd like to see the U. S. Sentencing Commission make further changes to the guidelines. Along with this effort, we're working with animal advocates and state and federal lawmakers to【C8】______ anti-cruelty laws across the country, as well as supporting laws and policies that assist overburdened animal【C9】______ that care for animal fighting victims. This help is【C10】______ important because the high cost of caring for animal victims is a major factor that prevents people from getting involved in cruelty cases in the first place.A)convenient I)methodB)creates J)minimalC)critically K)rarelyD)determine L)sheltersE)direction M)strengthenF)hesitate N)sufferingsG)inadequate O)torturedH)inspired